RHSA-2026:23262

Vulnerability from csaf_redhat - Published: 2026-06-04 12:39 - Updated: 2026-08-16 14:15
Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Important
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs: golang1.25: * golang1.25-1.25.11-2.hum1 (aarch64, x86_64) * golang1.25-bin-1.25.11-2.hum1 (aarch64, x86_64) * golang1.25-docs-1.25.11-2.hum1 (noarch) * golang1.25-misc-1.25.11-2.hum1 (noarch) * golang1.25-src-1.25.11-2.hum1 (noarch) * golang1.25-tests-1.25.11-2.hum1 (noarch) * golang1.25-1.25.11-2.hum1.src (src)
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
CVE-2026-27145

A flaw was found in the `crypto/x509` package of `golang`. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name (SAN) entries. The certificate verification process, specifically the `VerifyHostname` function, incurs excessive computational overhead due to repeated string operations when processing these entries. This can lead to a significant performance degradation or unresponsiveness of systems validating such certificates.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-606 - Unchecked Input for Loop Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-33811

A flaw was found in the `net` package of Go (golang), specifically when using the `LookupCNAME` function with the `cgo` DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name (CNAME) response. This can trigger a double-free of C memory, leading to a crash and a Denial of Service (DoS) for the affected application.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1341 - Multiple Releases of Same Resource or Handle
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-33814

A flaw was found in the HTTP/2 protocol implementation within the Go standard library (golang.org/x/net and net/http/internal/http2). A remote attacker can exploit this vulnerability by sending a specially crafted HTTP/2 SETTINGS frame with the SETTINGS_MAX_FRAME_SIZE parameter set to zero. This malicious frame causes the transport layer to enter an infinite loop of writing CONTINUATION frames, leading to resource exhaustion and a Denial of Service (DoS) condition.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-606 - Unchecked Input for Loop Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-39820

A flaw was found in the `net/mail` package of the Go programming language. An attacker could provide specially crafted inputs to the `ParseAddress`, `ParseAddressList`, or `ParseDate` functions. This could lead to excessive consumption of CPU and memory resources, resulting in a Denial of Service (DoS) for applications processing these inputs.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-606 - Unchecked Input for Loop Condition
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-39821

A flaw was found in golang.org/x/net/idna. ToASCII and ToUnicode incorrectly accept Punycode-encoded labels that decode to an ASCII-only hostname (for example, xn--example-.com returns example.com instead of an error). Applications that validate the ASCII form then convert to Unicode may grant access to a restricted hostname the ASCII check would have rejected.

8.2 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-39823

A flaw was found in the `html/template` package of Go. A remote attacker could exploit this vulnerability by inserting ASCII whitespaces around the equals sign (`=`) within a URL's content attribute inside a `<meta>` tag. This improper escaping could lead to Cross-Site Scripting (XSS), allowing the attacker to execute malicious scripts in the user's browser.

5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-39825

A flaw was found in the `net/http/httputil` package, specifically within the `ReverseProxy` component. This vulnerability allows the `ReverseProxy` to forward query parameters that are not visible to `Rewrite` functions. This occurs because the `ReverseProxy` does not correctly consider the `url.ParseQuery` limit on the total number of query parameters. A remote attacker could exploit this to send hidden query parameters, potentially bypassing security policies or controls implemented by `Rewrite` functions, leading to information disclosure or unexpected behavior.

6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE-472 - External Control of Assumed-Immutable Web Parameter
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-39826

A flaw was found in html/template. A trusted template author could craft a script tag with an empty or whitespace-only 'type' attribute. This vulnerability causes the template engine to incorrectly escape data passed into the script block, potentially leading to cross-site scripting (XSS). An attacker could leverage this to execute arbitrary client-side scripts in a user's browser.

5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
CWE-1289 - Improper Validation of Unsafe Equivalence in Input
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-39836

A flaw was found in the `net` package of Go (golang). When running on Windows, the `Dial` and `LookupPort` functions can panic if they receive an input containing a NUL (0) byte. This can be triggered by a remote attacker providing a specially crafted input, leading to a denial of service (DoS) for applications using these functions.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-617 - Reachable Assertion
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-42504

A flaw was found in the Golang MIME (Multipurpose Internet Mail Extensions) package. A remote attacker could exploit this vulnerability by sending a maliciously-crafted MIME header containing many invalid encoded-words. This could lead to excessive CPU consumption, resulting in a Denial of Service (DoS) for the affected system.

7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-1050 - Excessive Platform Resource Consumption within a Loop
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
CVE-2026-42507

A flaw was found in the net/textproto package in Golang. When functions in this package return errors, they include their input as part of the error message. An attacker could exploit this by injecting misleading content into these error messages, which are then printed or logged. This could lead to confusion or misinterpretation of critical system information.

5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CWE-117 - Improper Output Neutralization for Logs
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Moderate
CVE-2026-42508

A flaw was found in golang.org/x/crypto/ssh/knownhosts. This vulnerability occurs because the system did not correctly check for the revocation status of a SignatureKey belonging to a Certificate Authority (CA). A remote attacker could potentially exploit this by presenting a revoked key, leading to the system accepting it as valid. This could allow an attacker to bypass security checks and potentially gain unauthorized access or spoof legitimate entities.

7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-295 - Improper Certificate Validation
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Threats
Impact Important
CVE-2026-46595

A flaw was found in golang.org/x/crypto/ssh. Source-address validation can be skipped when an SSH server configuration uses an authentication callback type other than public key, allowing authorization bypass in misconfigured servers. This is a follow-on to incomplete coverage from the CVE-2024-45337 fix.

7.1 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
CWE-303 - Incorrect Implementation of Authentication Algorithm
Affected products
Product Identifier Version Remediation
Unresolved product id: Red Hat Hardened Images:golang1-25-main@aarch64 —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@noarch —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@src —
Vendor Fix fix
Workaround
Unresolved product id: Red Hat Hardened Images:golang1-25-main@x86_64 —
Vendor Fix fix
Workaround
Threats
Impact Important
References
URL Category
https://access.redhat.com/errata/RHSA-2026:23262 self
https://images.redhat.com/ external
https://access.redhat.com/security/cve/CVE-2026-42504 external
https://access.redhat.com/security/updates/classi… external
https://access.redhat.com/security/cve/CVE-2026-27145 external
https://access.redhat.com/security/cve/CVE-2026-42507 external
https://access.redhat.com/security/cve/CVE-2026-39821 external
https://access.redhat.com/security/cve/CVE-2026-46595 external
https://access.redhat.com/security/cve/CVE-2026-39826 external
https://access.redhat.com/security/cve/CVE-2026-33811 external
https://access.redhat.com/security/cve/CVE-2026-39820 external
https://access.redhat.com/security/cve/CVE-2026-39836 external
https://access.redhat.com/security/cve/CVE-2026-39825 external
https://access.redhat.com/security/cve/CVE-2026-39823 external
https://access.redhat.com/security/cve/CVE-2026-33814 external
https://access.redhat.com/security/cve/CVE-2026-42508 external
https://access.redhat.com/security/cve/CVE-2026-42501 external
https://security.access.redhat.com/data/csaf/v2/a… self
https://access.redhat.com/security/cve/CVE-2026-27145 self
https://bugzilla.redhat.com/show_bug.cgi?id=2484207 external
https://www.cve.org/CVERecord?id=CVE-2026-27145 external
https://nvd.nist.gov/vuln/detail/CVE-2026-27145 external
https://go.dev/cl/783621 external
https://go.dev/issue/79694 external
https://groups.google.com/g/golang-announce/c/tKs… external
https://pkg.go.dev/vuln/GO-2026-5037 external
https://access.redhat.com/security/cve/CVE-2026-33811 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467822 external
https://www.cve.org/CVERecord?id=CVE-2026-33811 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33811 external
https://go.dev/cl/767860 external
https://go.dev/issue/78803 external
https://groups.google.com/g/golang-announce/c/qcC… external
https://pkg.go.dev/vuln/GO-2026-4981 external
https://access.redhat.com/security/cve/CVE-2026-33814 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467815 external
https://www.cve.org/CVERecord?id=CVE-2026-33814 external
https://nvd.nist.gov/vuln/detail/CVE-2026-33814 external
https://go.dev/cl/761581 external
https://go.dev/cl/761640 external
https://go.dev/issue/78476 external
https://pkg.go.dev/vuln/GO-2026-4918 external
https://access.redhat.com/security/cve/CVE-2026-39820 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467820 external
https://www.cve.org/CVERecord?id=CVE-2026-39820 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39820 external
https://go.dev/cl/759940 external
https://go.dev/issue/78566 external
https://pkg.go.dev/vuln/GO-2026-4986 external
https://access.redhat.com/security/cve/CVE-2026-39821 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480756 external
https://www.cve.org/CVERecord?id=CVE-2026-39821 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39821 external
https://go.dev/cl/767220 external
https://go.dev/issue/78760 external
https://groups.google.com/g/golang-announce/c/iI-… external
https://pkg.go.dev/vuln/GO-2026-5026 external
https://access.redhat.com/security/cve/CVE-2026-39823 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467811 external
https://www.cve.org/CVERecord?id=CVE-2026-39823 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39823 external
https://go.dev/cl/769920 external
https://go.dev/issue/78913 external
https://pkg.go.dev/vuln/GO-2026-4982 external
https://access.redhat.com/security/cve/CVE-2026-39825 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467823 external
https://www.cve.org/CVERecord?id=CVE-2026-39825 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39825 external
https://go.dev/cl/770541 external
https://go.dev/issue/78948 external
https://pkg.go.dev/vuln/GO-2026-4976 external
https://access.redhat.com/security/cve/CVE-2026-39826 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467826 external
https://www.cve.org/CVERecord?id=CVE-2026-39826 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39826 external
https://go.dev/cl/771180 external
https://go.dev/issue/78981 external
https://pkg.go.dev/vuln/GO-2026-4980 external
https://access.redhat.com/security/cve/CVE-2026-39836 self
https://bugzilla.redhat.com/show_bug.cgi?id=2467827 external
https://www.cve.org/CVERecord?id=CVE-2026-39836 external
https://nvd.nist.gov/vuln/detail/CVE-2026-39836 external
https://go.dev/cl/775320 external
https://go.dev/issue/79006 external
https://pkg.go.dev/vuln/GO-2026-4971 external
https://access.redhat.com/security/cve/CVE-2026-42504 self
https://bugzilla.redhat.com/show_bug.cgi?id=2484204 external
https://www.cve.org/CVERecord?id=CVE-2026-42504 external
https://nvd.nist.gov/vuln/detail/CVE-2026-42504 external
https://go.dev/cl/774481 external
https://go.dev/issue/79217 external
https://pkg.go.dev/vuln/GO-2026-5038 external
https://access.redhat.com/security/cve/CVE-2026-42507 self
https://bugzilla.redhat.com/show_bug.cgi?id=2484205 external
https://www.cve.org/CVERecord?id=CVE-2026-42507 external
https://nvd.nist.gov/vuln/detail/CVE-2026-42507 external
https://go.dev/cl/777060 external
https://go.dev/issue/79346 external
https://pkg.go.dev/vuln/GO-2026-5039 external
https://access.redhat.com/security/cve/CVE-2026-42508 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480688 external
https://www.cve.org/CVERecord?id=CVE-2026-42508 external
https://nvd.nist.gov/vuln/detail/CVE-2026-42508 external
https://go.dev/cl/781220 external
https://go.dev/issue/79568 external
https://groups.google.com/g/golang-announce/c/a08… external
https://pkg.go.dev/vuln/GO-2026-5021 external
https://access.redhat.com/security/cve/CVE-2026-46595 self
https://bugzilla.redhat.com/show_bug.cgi?id=2480689 external
https://www.cve.org/CVERecord?id=CVE-2026-46595 external
https://nvd.nist.gov/vuln/detail/CVE-2026-46595 external
https://go.dev/cl/781642 external
https://go.dev/issue/79570 external
https://pkg.go.dev/vuln/GO-2026-5023 external
To clipboard 

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        "text": "An update for Red Hat Hardened Images RPMs is now available.",
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        "category": "general",
        "text": "This update includes the following RPMs:\n\ngolang1.25:\n  * golang1.25-1.25.11-2.hum1 (aarch64, x86_64)\n  * golang1.25-bin-1.25.11-2.hum1 (aarch64, x86_64)\n  * golang1.25-docs-1.25.11-2.hum1 (noarch)\n  * golang1.25-misc-1.25.11-2.hum1 (noarch)\n  * golang1.25-src-1.25.11-2.hum1 (noarch)\n  * golang1.25-tests-1.25.11-2.hum1 (noarch)\n  * golang1.25-1.25.11-2.hum1.src (src)",
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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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        "category": "external",
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      "cwe": {
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        "name": "Unchecked Input for Loop Condition"
      },
      "discovery_date": "2026-06-02T23:01:08.992540+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2484207"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `crypto/x509` package of `golang`. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name (SAN) entries. The certificate verification process, specifically the `VerifyHostname` function, incurs excessive computational overhead due to repeated string operations when processing these entries. This can lead to a significant performance degradation or unresponsiveness of systems validating such certificates.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A flaw was found in the Go standard library crypto/x509 package. When verifying a TLS certificate hostname, VerifyHostname processed each DNS Subject Alternative Name (SAN) entry in a loop and repeatedly split the candidate hostname on \".\" characters. For certificates with a very large DNS SAN list, CPU use could grow quadratically with the number of SAN entries and hostname labels. Because hostname verification runs before the certificate chain is built, this overhead can occur even when the certificate is not trusted.\n\nRed Hat rates this issue as Important. It affects Red Hat products that include the Go standard library crypto/x509 code from an affected Go toolchain version (before Go 1.25.11, or from Go 1.26.0 through Go 1.26.3). Applications and container images built with a fixed Go release (1.25.11 or later, or 1.26.4 or later) are not affected. Community distributions such as Fedora are also affected.\n\nUpstream fix: Go 1.25.11 and Go 1.26.4 (GO-2026-5037).",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-27145"
        },
        {
          "category": "external",
          "summary": "RHBZ#2484207",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484207"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-27145",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-27145"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-27145"
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          "summary": "https://go.dev/cl/783621",
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          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
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            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
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          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "A flaw was found in the Go standard library crypto/x509 package. When verifying a TLS certificate hostname, VerifyHostname processed each DNS Subject Alternative Name (SAN) entry in a loop and repeatedly split the candidate hostname on \".\" characters. For certificates with a very large DNS SAN list, CPU use could grow quadratically with the number of SAN entries and hostname labels. Because hostname verification runs before the certificate chain is built, this overhead can occur even when the certificate is not trusted.\n\nRed Hat rates this issue as Important. It affects Red Hat products that include the Go standard library crypto/x509 code from an affected Go toolchain version (before Go 1.25.11, or from Go 1.26.0 through Go 1.26.3). Applications and container images built with a fixed Go release (1.25.11 or later, or 1.26.4 or later) are not affected. Community distributions such as Fedora are also affected.\n\nUpstream fix: Go 1.25.11 and Go 1.26.4 (GO-2026-5037).",
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            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
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            "Red Hat Hardened Images:golang1-25-main@x86_64"
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          "details": "Important"
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      "title": "crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries"
    },
    {
      "cve": "CVE-2026-33811",
      "cwe": {
        "id": "CWE-1341",
        "name": "Multiple Releases of Same Resource or Handle"
      },
      "discovery_date": "2026-05-07T20:01:34.913869+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467822"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `net` package of Go (golang), specifically when using the `LookupCNAME` function with the `cgo` DNS resolver. A remote attacker could exploit this by providing a very long Canonical Name (CNAME) response. This can trigger a double-free of C memory, leading to a crash and a Denial of Service (DoS) for the affected application.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service vulnerability in the Go `net` package, affecting applications configured to use the `cgo` DNS resolver. A remote attacker could trigger a double-free memory error by providing a very long CNAME response, leading to a crash of the vulnerable application and impacting service availability.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-33811"
        },
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          "summary": "RHBZ#2467822",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467822"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-33811",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-33811"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33811",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33811"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/767860",
          "url": "https://go.dev/cl/767860"
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          "summary": "https://go.dev/issue/78803",
          "url": "https://go.dev/issue/78803"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
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        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4981",
          "url": "https://pkg.go.dev/vuln/GO-2026-4981"
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      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
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            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
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            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
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          "category": "workaround",
          "details": "To mitigate this issue, applications can be configured to use the pure Go DNS resolver instead of the `cgo` DNS resolver. This can be achieved by setting the `GODEBUG` environment variable to `netdns=go`. For example, to run a Go application with this mitigation: `GODEBUG=netdns=go /path/to/your/go/application`. This change may require restarting affected applications or services to take effect. Users should verify that this change does not negatively impact DNS resolution for their specific application environment.",
          "product_ids": [
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            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
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      "title": "net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME"
    },
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      "cwe": {
        "id": "CWE-606",
        "name": "Unchecked Input for Loop Condition"
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      "ids": [
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          "text": "2467815"
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          "text": "A flaw was found in the HTTP/2 protocol implementation within the Go standard library (golang.org/x/net and net/http/internal/http2). A remote attacker can exploit this vulnerability by sending a specially crafted HTTP/2 SETTINGS frame with the SETTINGS_MAX_FRAME_SIZE parameter set to zero. This malicious frame causes the transport layer to enter an infinite loop of writing CONTINUATION frames, leading to resource exhaustion and a Denial of Service (DoS) condition.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Important denial of service flaw in the Go HTTP/2 protocol implementation allows a remote, unauthenticated attacker to exhaust system resources. By sending a specially crafted HTTP/2 SETTINGS frame with a zero-value SETTINGS_MAX_FRAME_SIZE, the vulnerable Go library enters an infinite loop, impacting the availability of services utilizing HTTP/2.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
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          "url": "https://access.redhat.com/security/cve/CVE-2026-33814"
        },
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          "summary": "RHBZ#2467815",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467815"
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          "url": "https://www.cve.org/CVERecord?id=CVE-2026-33814"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33814"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/761581",
          "url": "https://go.dev/cl/761581"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/761640",
          "url": "https://go.dev/cl/761640"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78476",
          "url": "https://go.dev/issue/78476"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4918",
          "url": "https://pkg.go.dev/vuln/GO-2026-4918"
        }
      ],
      "release_date": "2026-05-07T19:41:17.631000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame"
    },
    {
      "cve": "CVE-2026-39820",
      "cwe": {
        "id": "CWE-606",
        "name": "Unchecked Input for Loop Condition"
      },
      "discovery_date": "2026-05-07T20:01:27.800929+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467820"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `net/mail` package of the Go programming language. An attacker could provide specially crafted inputs to the `ParseAddress`, `ParseAddressList`, or `ParseDate` functions. This could lead to excessive consumption of CPU and memory resources, resulting in a Denial of Service (DoS) for applications processing these inputs.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/mail: golang: Go net/mail: Denial of Service via crafted email inputs",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important denial of service vulnerability in the Go `net/mail` package. Applications processing untrusted email inputs via `ParseAddress`, `ParseAddressList`, or `ParseDate` functions are susceptible to excessive resource consumption, which can lead to service unavailability.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39820"
        },
        {
          "category": "external",
          "summary": "RHBZ#2467820",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467820"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39820",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39820"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39820",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39820"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/759940",
          "url": "https://go.dev/cl/759940"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78566",
          "url": "https://go.dev/issue/78566"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4986",
          "url": "https://pkg.go.dev/vuln/GO-2026-4986"
        }
      ],
      "release_date": "2026-05-07T19:41:19.854000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "net/mail: golang: Go net/mail: Denial of Service via crafted email inputs"
    },
    {
      "cve": "CVE-2026-39821",
      "cwe": {
        "id": "CWE-1289",
        "name": "Improper Validation of Unsafe Equivalence in Input"
      },
      "discovery_date": "2026-05-22T16:00:52.844126+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480756"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in golang.org/x/net/idna. ToASCII and ToUnicode incorrectly accept Punycode-encoded labels that decode to an ASCII-only hostname (for example, xn--example-.com returns example.com instead of an error). Applications that validate the ASCII form then convert to Unicode may grant access to a restricted hostname the ASCII check would have rejected.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "golang.org/x/net/idna is vulnerable to privilege escalation through incorrect Punycode label handling in ToASCII and ToUnicode. An attacker who can supply a Punycode hostname that passes an ASCII-only authorization check may have it normalized to a restricted ASCII name the application intended to block. Red Hat exposure is broad across products shipping the Go toolchain or bundling golang.org/x/net, including RHEL and RHEL-AI golang RPMs, hummingbird Go runtimes, OpenShift and ODF container builds, and Ceph/OpenShift components compiled against affected x/net versions.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39821"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480756",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480756"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39821",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39821"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39821",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39821"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/767220",
          "url": "https://go.dev/cl/767220"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78760",
          "url": "https://go.dev/issue/78760"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8",
          "url": "https://groups.google.com/g/golang-announce/c/iI-mYSI0lu8"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-5026",
          "url": "https://pkg.go.dev/vuln/GO-2026-5026"
        }
      ],
      "release_date": "2026-05-22T15:01:21.462000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Upgrade to a fixed golang.org/x/net release that includes the idna correction, via updated golang or dependent package rebuilds.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing"
    },
    {
      "cve": "CVE-2026-39823",
      "cwe": {
        "id": "CWE-79",
        "name": "Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)"
      },
      "discovery_date": "2026-05-07T20:00:58.284024+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467811"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `html/template` package of Go. A remote attacker could exploit this vulnerability by inserting ASCII whitespaces around the equals sign (`=`) within a URL\u0027s content attribute inside a `\u003cmeta\u003e` tag. This improper escaping could lead to Cross-Site Scripting (XSS), allowing the attacker to execute malicious scripts in the user\u0027s browser.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat products ship the Go `html/template` package as a dependency of various Go-based components. The affected functionality involves URL escaping inside `\u003cmeta\u003e` tag content attributes, which requires an application to render user-controlled URLs in meta tags using `html/template`. While the vulnerable code is present, exploitation requires a specific usage pattern that is uncommon in Red Hat product code paths.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39823"
        },
        {
          "category": "external",
          "summary": "RHBZ#2467811",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467811"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39823",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39823"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39823",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39823"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/769920",
          "url": "https://go.dev/cl/769920"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78913",
          "url": "https://go.dev/issue/78913"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4982",
          "url": "https://pkg.go.dev/vuln/GO-2026-4982"
        }
      ],
      "release_date": "2026-05-07T19:41:19.524000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Ensure that user-supplied URLs are validated and sanitized before being passed to Go\u0027s `html/template` package for rendering in HTML meta tag content attributes. Avoid rendering untrusted URL data directly in meta tag content attributes.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "html/template: golang: Go html/template: Cross-Site Scripting via improper URL escaping in meta tag content"
    },
    {
      "cve": "CVE-2026-39825",
      "cwe": {
        "id": "CWE-472",
        "name": "External Control of Assumed-Immutable Web Parameter"
      },
      "discovery_date": "2026-05-07T20:01:37.714133+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467823"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `net/http/httputil` package, specifically within the `ReverseProxy` component. This vulnerability allows the `ReverseProxy` to forward query parameters that are not visible to `Rewrite` functions. This occurs because the `ReverseProxy` does not correctly consider the `url.ParseQuery` limit on the total number of query parameters. A remote attacker could exploit this to send hidden query parameters, potentially bypassing security policies or controls implemented by `Rewrite` functions, leading to information disclosure or unexpected behavior.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/http/httputil: golang: net/http/httputil: ReverseProxy forwards hidden query parameters, potentially bypassing security controls",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "A flaw was found in Go\u0027s net/http/httputil package where ReverseProxy can forward query parameters that are hidden from Rewrite or Director functions. This occurs when the number of query parameters exceeds the url.ParseQuery limit (controlled by the GODEBUG setting urlmaxqueryparams). While Red Hat ships Go-based components across many products, exploitation requires that an application use ReverseProxy with a Rewrite or Director function that relies on query parameter inspection for security enforcement, which limits the practical impact of this vulnerability.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39825"
        },
        {
          "category": "external",
          "summary": "RHBZ#2467823",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467823"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39825",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39825"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39825",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39825"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/770541",
          "url": "https://go.dev/cl/770541"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78948",
          "url": "https://go.dev/issue/78948"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4976",
          "url": "https://pkg.go.dev/vuln/GO-2026-4976"
        }
      ],
      "release_date": "2026-05-07T19:41:18.453000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Increase the maximum number of query parameters allowed by setting the GODEBUG environment variable `urlmaxqueryparams` to a higher value (e.g., `GODEBUG=urlmaxqueryparams=20000`), or validate and enforce security controls on query parameters at the backend service rather than relying solely on the ReverseProxy\u0027s Rewrite or Director function for security filtering.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "net/http/httputil: golang: net/http/httputil: ReverseProxy forwards hidden query parameters, potentially bypassing security controls"
    },
    {
      "cve": "CVE-2026-39826",
      "cwe": {
        "id": "CWE-1289",
        "name": "Improper Validation of Unsafe Equivalence in Input"
      },
      "discovery_date": "2026-05-07T20:01:46.305827+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467826"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in html/template. A trusted template author could craft a script tag with an empty or whitespace-only \u0027type\u0027 attribute. This vulnerability causes the template engine to incorrectly escape data passed into the script block, potentially leading to cross-site scripting (XSS). An attacker could leverage this to execute arbitrary client-side scripts in a user\u0027s browser.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "html/template: golang: html/template: Cross-site scripting due to incorrect script tag escaping",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39826"
        },
        {
          "category": "external",
          "summary": "RHBZ#2467826",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467826"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39826",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39826"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39826",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39826"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/771180",
          "url": "https://go.dev/cl/771180"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/78981",
          "url": "https://go.dev/issue/78981"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4980",
          "url": "https://pkg.go.dev/vuln/GO-2026-4980"
        }
      ],
      "release_date": "2026-05-07T19:41:19.138000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "html/template: golang: html/template: Cross-site scripting due to incorrect script tag escaping"
    },
    {
      "cve": "CVE-2026-39836",
      "cwe": {
        "id": "CWE-617",
        "name": "Reachable Assertion"
      },
      "discovery_date": "2026-05-07T20:01:49.423498+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2467827"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the `net` package of Go (golang). When running on Windows, the `Dial` and `LookupPort` functions can panic if they receive an input containing a NUL (0) byte. This can be triggered by a remote attacker providing a specially crafted input, leading to a denial of service (DoS) for applications using these functions.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net: golang: Go net package: Denial of Service via NUL byte in Dial and LookupPort on Windows",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This denial of service flaw exists within the Go `net` package, specifically impacting applications when executed on Microsoft Windows operating systems. Red Hat Product Security has rated this flaw as a Moderate as Red Hat products primarily deploy Go applications on Linux-based environments. Customers operating Go applications, including those bundled with Red Hat products, within a Windows environment should assess their exposure to this flaw.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-39836"
        },
        {
          "category": "external",
          "summary": "RHBZ#2467827",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2467827"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-39836",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-39836"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39836",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39836"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/775320",
          "url": "https://go.dev/cl/775320"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/79006",
          "url": "https://go.dev/issue/79006"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M",
          "url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-4971",
          "url": "https://pkg.go.dev/vuln/GO-2026-4971"
        }
      ],
      "release_date": "2026-05-07T19:41:18.300000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "net: golang: Go net package: Denial of Service via NUL byte in Dial and LookupPort on Windows"
    },
    {
      "cve": "CVE-2026-42504",
      "cwe": {
        "id": "CWE-1050",
        "name": "Excessive Platform Resource Consumption within a Loop"
      },
      "discovery_date": "2026-06-02T23:01:00.320527+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2484204"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Golang MIME (Multipurpose Internet Mail Extensions) package. A remote attacker could exploit this vulnerability by sending a maliciously-crafted MIME header containing many invalid encoded-words. This could lead to excessive CPU consumption, resulting in a Denial of Service (DoS) for the affected system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is rated as an Important severity flaw. A remote attacker could trigger a Denial of Service by sending a crafted MIME header with numerous invalid encoded-words to an application utilizing the affected Golang MIME package. This could lead to excessive CPU consumption on the system processing the malformed header, impacting service availability.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-42504"
        },
        {
          "category": "external",
          "summary": "RHBZ#2484204",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484204"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-42504",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-42504"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42504"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/774481",
          "url": "https://go.dev/cl/774481"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/79217",
          "url": "https://go.dev/issue/79217"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw",
          "url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-5038",
          "url": "https://pkg.go.dev/vuln/GO-2026-5038"
        }
      ],
      "release_date": "2026-06-02T22:01:37.219000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "To mitigate this issue, restrict network access to services that process MIME headers from untrusted sources. Implement input validation and sanitization for all incoming data, especially MIME headers, to prevent maliciously crafted content from being processed by applications utilizing the vulnerable Golang MIME package.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header"
    },
    {
      "cve": "CVE-2026-42507",
      "cwe": {
        "id": "CWE-117",
        "name": "Improper Output Neutralization for Logs"
      },
      "discovery_date": "2026-06-02T23:01:03.125126+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2484205"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the net/textproto package in Golang. When functions in this package return errors, they include their input as part of the error message. An attacker could exploit this by injecting misleading content into these error messages, which are then printed or logged. This could lead to confusion or misinterpretation of critical system information.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "net/textproto: golang: Golang net/textproto: Misleading error messages via input injection",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-42507"
        },
        {
          "category": "external",
          "summary": "RHBZ#2484205",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484205"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-42507",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-42507"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42507",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42507"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/777060",
          "url": "https://go.dev/cl/777060"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/79346",
          "url": "https://go.dev/issue/79346"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw",
          "url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-5039",
          "url": "https://pkg.go.dev/vuln/GO-2026-5039"
        }
      ],
      "release_date": "2026-06-02T22:01:37.307000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "net/textproto: golang: Golang net/textproto: Misleading error messages via input injection"
    },
    {
      "cve": "CVE-2026-42508",
      "cwe": {
        "id": "CWE-295",
        "name": "Improper Certificate Validation"
      },
      "discovery_date": "2026-05-22T04:01:49.515058+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480688"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in golang.org/x/crypto/ssh/knownhosts. This vulnerability occurs because the system did not correctly check for the revocation status of a SignatureKey belonging to a Certificate Authority (CA). A remote attacker could potentially exploit this by presenting a revoked key, leading to the system accepting it as valid. This could allow an attacker to bypass security checks and potentially gain unauthorized access or spoof legitimate entities.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Important: A flaw in `golang.org/x/crypto/ssh/knownhosts` allows a remote attacker to bypass security checks. This vulnerability arises because the system fails to properly verify the revocation status of a Certificate Authority (CA) `SignatureKey`. In Red Hat environments, this could enable an attacker to present a revoked key, leading to its acceptance as valid and potentially granting unauthorized access or facilitating the spoofing of legitimate entities.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-42508"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480688",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480688"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-42508",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-42508"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-42508",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42508"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/781220",
          "url": "https://go.dev/cl/781220"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/79568",
          "url": "https://go.dev/issue/79568"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI",
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-5021",
          "url": "https://pkg.go.dev/vuln/GO-2026-5021"
        }
      ],
      "release_date": "2026-05-22T02:31:27.644000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey"
    },
    {
      "cve": "CVE-2026-46595",
      "cwe": {
        "id": "CWE-303",
        "name": "Incorrect Implementation of Authentication Algorithm"
      },
      "discovery_date": "2026-05-22T04:01:52.215134+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2480689"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in golang.org/x/crypto/ssh. Source-address validation can be skipped when an SSH server configuration uses an authentication callback type other than public key, allowing authorization bypass in misconfigured servers. This is a follow-on to incomplete coverage from the CVE-2024-45337 fix.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "golang.org/x/crypto/ssh is vulnerable to authorization bypass when SSH server configurations rely on source-address validation alongside non-public-key authentication callbacks. An attacker with low privileges who can authenticate through such a callback path may bypass intended source-address restrictions and gain unauthorized SSH access. Red Hat impact sits in services built with affected x/crypto/ssh, including RHEL golang streams, hummingbird Go toolchains, RHACM/MCE agents, and OpenShift or Ceph components that embed Go SSH servers with mixed callback types.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Hardened Images:golang1-25-main@aarch64",
          "Red Hat Hardened Images:golang1-25-main@noarch",
          "Red Hat Hardened Images:golang1-25-main@src",
          "Red Hat Hardened Images:golang1-25-main@x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-46595"
        },
        {
          "category": "external",
          "summary": "RHBZ#2480689",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480689"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-46595",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-46595"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46595",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46595"
        },
        {
          "category": "external",
          "summary": "https://go.dev/cl/781642",
          "url": "https://go.dev/cl/781642"
        },
        {
          "category": "external",
          "summary": "https://go.dev/issue/79570",
          "url": "https://go.dev/issue/79570"
        },
        {
          "category": "external",
          "summary": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI",
          "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"
        },
        {
          "category": "external",
          "summary": "https://pkg.go.dev/vuln/GO-2026-5023",
          "url": "https://pkg.go.dev/vuln/GO-2026-5023"
        }
      ],
      "release_date": "2026-05-22T02:31:27.894000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-04T12:39:22+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\nhttps://images.redhat.com/",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:23262"
        },
        {
          "category": "workaround",
          "details": "Upgrade to a fixed golang.org/x/crypto/ssh release via updated golang or package rebuilds. Ensure SSH servers use supported public-key callback configurations with source-address validation as intended.",
          "product_ids": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L",
            "version": "3.1"
          },
          "products": [
            "Red Hat Hardened Images:golang1-25-main@aarch64",
            "Red Hat Hardened Images:golang1-25-main@noarch",
            "Red Hat Hardened Images:golang1-25-main@src",
            "Red Hat Hardened Images:golang1-25-main@x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation"
    }
  ]
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.