RHSA-2026:37268
Vulnerability from csaf_redhat - Published: 2026-07-09 11:41 - Updated: 2026-07-09 23:10Summary
Red Hat Security Advisory: RHTAS 1.4.2 - Red Hat Trusted Artifact Signer Release
Severity
Important
Notes
Topic: The 1.4.2 release of Red Hat Trusted Artifact Signer OpenShift Operator.
For more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4
Details: The RHTAS Operator can be used with OpenShift Container Platform 4.17, 4.18, 4.19, 4.20, 4.21, 4.22
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.
A flaw was found in golang.org/x/crypto/ssh. A remote attacker could exploit this vulnerability when an SSH server authentication callback returned a PartialSuccessError with non-nil permissions. This flaw caused these permissions to be silently discarded, potentially bypassing certificate restrictions, such as a force-command, after a second authentication factor succeeded. This could lead to unauthorized command execution or access.
8.8 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in golang.org/x/crypto/ssh. The RSA and DSA public key parsers in the affected component did not enforce size limits on key parameters. This vulnerability allows an unauthenticated client to provide a crafted public key with an excessively large modulus or DSA parameter during public key authentication. Successful exploitation could lead to a denial of service (DoS) due to prolonged CPU consumption during signature verification.
7.5 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in golang.org/x/crypto/ssh. A remote malicious SSH peer can exploit this by sending unsolicited global request responses, which fills an internal buffer and blocks the connection's read loop. This prevents the associated resources from being released, leading to a resource leak per connection. The consequence is a Denial of Service (DoS) for the affected system.
7.5 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
A flaw was found in golang.org/x/crypto/ssh. SSH servers configured to use CertChecker as a public key callback, without explicitly setting IsUserAuthority or IsHostAuthority, are vulnerable. A remote attacker can exploit this by presenting a specially crafted certificate, causing the server to panic and resulting in a Denial of Service (DoS).
7.5 (High)
Affected products
Fixed
2 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Important
References
40 references
{
"document": {
"aggregate_severity": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"text": "Important"
},
"category": "csaf_security_advisory",
"csaf_version": "2.0",
"distribution": {
"text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en",
"notes": [
{
"category": "summary",
"text": "The 1.4.2 release of Red Hat Trusted Artifact Signer OpenShift Operator.\nFor more details please visit the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"title": "Topic"
},
{
"category": "general",
"text": "The RHTAS Operator can be used with OpenShift Container Platform 4.17, 4.18, 4.19, 4.20, 4.21, 4.22",
"title": "Details"
},
{
"category": "legal_disclaimer",
"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.",
"title": "Terms of Use"
}
],
"publisher": {
"category": "vendor",
"contact_details": "https://access.redhat.com/security/team/contact/",
"issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
"name": "Red Hat Product Security",
"namespace": "https://www.redhat.com"
},
"references": [
{
"category": "self",
"summary": "https://access.redhat.com/errata/RHSA-2026:37268",
"url": "https://access.redhat.com/errata/RHSA-2026:37268"
},
{
"category": "external",
"summary": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4",
"url": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4"
},
{
"category": "external",
"summary": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
"url": "https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-39828",
"url": "https://access.redhat.com/security/cve/CVE-2026-39828"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-39829",
"url": "https://access.redhat.com/security/cve/CVE-2026-39829"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-39830",
"url": "https://access.redhat.com/security/cve/CVE-2026-39830"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/cve/CVE-2026-39835",
"url": "https://access.redhat.com/security/cve/CVE-2026-39835"
},
{
"category": "external",
"summary": "https://access.redhat.com/security/updates/classification/",
"url": "https://access.redhat.com/security/updates/classification/"
},
{
"category": "self",
"summary": "Canonical URL",
"url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_37268.json"
}
],
"title": "Red Hat Security Advisory: RHTAS 1.4.2 - Red Hat Trusted Artifact Signer Release",
"tracking": {
"current_release_date": "2026-07-09T23:10:39+00:00",
"generator": {
"date": "2026-07-09T23:10:39+00:00",
"engine": {
"name": "Red Hat SDEngine",
"version": "5.3.2"
}
},
"id": "RHSA-2026:37268",
"initial_release_date": "2026-07-09T11:41:11+00:00",
"revision_history": [
{
"date": "2026-07-09T11:41:11+00:00",
"number": "1",
"summary": "Initial version"
},
{
"date": "2026-07-09T11:41:24+00:00",
"number": "2",
"summary": "Last updated version"
},
{
"date": "2026-07-09T23:10:39+00:00",
"number": "3",
"summary": "Last generated version"
}
],
"status": "final",
"version": "3"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_name",
"name": "Red Hat Trusted Artifact Signer 1.4",
"product": {
"name": "Red Hat Trusted Artifact Signer 1.4",
"product_id": "Red Hat Trusted Artifact Signer 1.4",
"product_identification_helper": {
"cpe": "cpe:/a:redhat:trusted_artifact_signer:1.4::el9"
}
}
}
],
"category": "product_family",
"name": "Red Hat Trusted Artifact Signer"
},
{
"branches": [
{
"category": "product_version",
"name": "registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"product": {
"name": "registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"product_id": "registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"product_identification_helper": {
"purl": "pkg:oci/ctlog-monitor-rhel9@sha256%3A4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517?arch=amd64\u0026repository_url=registry.redhat.io/rhtas/ctlog-monitor-rhel9\u0026tag=1783330572"
}
}
},
{
"category": "product_version",
"name": "registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64",
"product": {
"name": "registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64",
"product_id": "registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64",
"product_identification_helper": {
"purl": "pkg:oci/rekor-monitor-rhel9@sha256%3A3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8?arch=amd64\u0026repository_url=registry.redhat.io/rhtas/rekor-monitor-rhel9\u0026tag=1783330572"
}
}
}
],
"category": "architecture",
"name": "amd64"
}
],
"category": "vendor",
"name": "Red Hat"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64 as a component of Red Hat Trusted Artifact Signer 1.4",
"product_id": "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64"
},
"product_reference": "registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"relates_to_product_reference": "Red Hat Trusted Artifact Signer 1.4"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64 as a component of Red Hat Trusted Artifact Signer 1.4",
"product_id": "Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
},
"product_reference": "registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64",
"relates_to_product_reference": "Red Hat Trusted Artifact Signer 1.4"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2026-39828",
"cwe": {
"id": "CWE-281",
"name": "Improper Preservation of Permissions"
},
"discovery_date": "2026-05-22T04:01:46.775641+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480687"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. A remote attacker could exploit this vulnerability when an SSH server authentication callback returned a PartialSuccessError with non-nil permissions. This flaw caused these permissions to be silently discarded, potentially bypassing certificate restrictions, such as a force-command, after a second authentication factor succeeded. This could lead to unauthorized command execution or access.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important security flaw in the `golang.org/x/crypto/ssh` library. When an SSH server utilizing this library is configured with specific authentication callbacks that return a `PartialSuccessError` with non-nil permissions, an attacker could bypass intended certificate restrictions, such as `force-command`. This bypass could lead to unauthorized command execution or access on affected Red Hat systems configured with multi-factor authentication and certificate-based access controls.",
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-39828"
},
{
"category": "external",
"summary": "RHBZ#2480687",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480687"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-39828",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39828"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39828",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39828"
},
{
"category": "external",
"summary": "https://go.dev/cl/781621",
"url": "https://go.dev/cl/781621"
},
{
"category": "external",
"summary": "https://go.dev/issue/79562",
"url": "https://go.dev/issue/79562"
},
{
"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-2026-5014",
"url": "https://pkg.go.dev/vuln/GO-2026-5014"
}
],
"release_date": "2026-05-22T02:31:26.883000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-09T11:41:11+00:00",
"details": "Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev\n\nPlatform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization\u0027s software supply chain.\n\nFor details on using the operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:37268"
},
{
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"products": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions"
},
{
"cve": "CVE-2026-39829",
"cwe": {
"id": "CWE-1284",
"name": "Improper Validation of Specified Quantity in Input"
},
"discovery_date": "2026-05-22T04:01:30.092249+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480681"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. The RSA and DSA public key parsers in the affected component did not enforce size limits on key parameters. This vulnerability allows an unauthenticated client to provide a crafted public key with an excessively large modulus or DSA parameter during public key authentication. Successful exploitation could lead to a denial of service (DoS) due to prolonged CPU consumption during signature verification.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This vulnerability in golang.org/x/crypto/ssh is rated as Important. An unauthenticated remote attacker could trigger a denial of service by providing a specially crafted public key with excessively large parameters during SSH public key authentication. This could lead to prolonged CPU consumption on the server, 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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-39829"
},
{
"category": "external",
"summary": "RHBZ#2480681",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480681"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-39829",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39829"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39829",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39829"
},
{
"category": "external",
"summary": "https://go.dev/cl/781641",
"url": "https://go.dev/cl/781641"
},
{
"category": "external",
"summary": "https://go.dev/cl/781661",
"url": "https://go.dev/cl/781661"
},
{
"category": "external",
"summary": "https://go.dev/issue/79565",
"url": "https://go.dev/issue/79565"
},
{
"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-2026-5018",
"url": "https://pkg.go.dev/vuln/GO-2026-5018"
}
],
"release_date": "2026-05-22T02:31:27.324000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-09T11:41:11+00:00",
"details": "Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev\n\nPlatform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization\u0027s software supply chain.\n\nFor details on using the operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:37268"
},
{
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters"
},
{
"cve": "CVE-2026-39830",
"cwe": {
"id": "CWE-772",
"name": "Missing Release of Resource after Effective Lifetime"
},
"discovery_date": "2026-05-22T04:01:38.517202+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480684"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. A remote malicious SSH peer can exploit this by sending unsolicited global request responses, which fills an internal buffer and blocks the connection\u0027s read loop. This prevents the associated resources from being released, leading to a resource leak per connection. The consequence is a Denial of Service (DoS) for the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important denial of service flaw in `golang.org/x/crypto/ssh`. A remote, unauthenticated attacker can exploit this vulnerability by sending unsolicited global request responses to an affected SSH server, leading to resource exhaustion and a denial of service. The impact is considered Important due to the potential for unauthenticated remote disruption of services utilizing the vulnerable SSH library.",
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-39830"
},
{
"category": "external",
"summary": "RHBZ#2480684",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480684"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-39830",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39830"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39830",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39830"
},
{
"category": "external",
"summary": "https://go.dev/cl/781640",
"url": "https://go.dev/cl/781640"
},
{
"category": "external",
"summary": "https://go.dev/cl/781664",
"url": "https://go.dev/cl/781664"
},
{
"category": "external",
"summary": "https://go.dev/issue/79564",
"url": "https://go.dev/issue/79564"
},
{
"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-2026-5017",
"url": "https://pkg.go.dev/vuln/GO-2026-5017"
}
],
"release_date": "2026-05-22T02:31:27.208000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-09T11:41:11+00:00",
"details": "Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev\n\nPlatform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization\u0027s software supply chain.\n\nFor details on using the operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:37268"
},
{
"category": "workaround",
"details": "To mitigate this denial of service vulnerability, restrict network access to any service that utilizes the `golang.org/x/crypto/ssh` library and is exposed to untrusted networks. Implement firewall rules to allow connections only from trusted hosts or networks. This action limits the ability of malicious peers to send unsolicited global request responses. A restart of the affected service may be necessary for the new network rules to be applied effectively.",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses"
},
{
"cve": "CVE-2026-39835",
"cwe": {
"id": "CWE-476",
"name": "NULL Pointer Dereference"
},
"discovery_date": "2026-05-22T04:01:27.279943+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2480680"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in golang.org/x/crypto/ssh. SSH servers configured to use CertChecker as a public key callback, without explicitly setting IsUserAuthority or IsHostAuthority, are vulnerable. A remote attacker can exploit this by presenting a specially crafted certificate, causing the server to panic and resulting in a Denial of Service (DoS).",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This is an Important denial of service flaw in `golang.org/x/crypto/ssh` affecting SSH servers that utilize `CertChecker` as a public key callback without explicitly configuring `IsUserAuthority` or `IsHostAuthority`. A remote, unauthenticated attacker can trigger a server panic by presenting a specially crafted certificate, leading to service disruption. Exploitation requires a specific, non-default configuration of the `CertChecker`.",
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-39835"
},
{
"category": "external",
"summary": "RHBZ#2480680",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2480680"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-39835",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-39835"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-39835",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39835"
},
{
"category": "external",
"summary": "https://go.dev/cl/781660",
"url": "https://go.dev/cl/781660"
},
{
"category": "external",
"summary": "https://go.dev/issue/79563",
"url": "https://go.dev/issue/79563"
},
{
"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-2026-5015",
"url": "https://pkg.go.dev/vuln/GO-2026-5015"
}
],
"release_date": "2026-05-22T02:31:26.982000+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-07-09T11:41:11+00:00",
"details": "Red Hat Trusted Artifact Signer simplifies cryptographic signing and verifying of software artifacts such as container images, binaries and source code changes. It is a self-managed on-premise deployment of the Sigstore project available at https://sigstore.dev\n\nPlatform Engineers, Software Developers and Security Professionals may use RHTAS to ensure the integrity, transparency and assurance of their organization\u0027s software supply chain.\n\nFor details on using the operator, refer to the product documentation at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4\n\nYou can find the release notes for this version of Red Hat Trusted Artifact Signer at https://access.redhat.com/documentation/en-us/red_hat_trusted_artifact_signer/1.4/html-single/release_notes/index",
"product_ids": [
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
],
"restart_required": {
"category": "none"
},
"url": "https://access.redhat.com/errata/RHSA-2026:37268"
},
{
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"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 Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/ctlog-monitor-rhel9@sha256:4502f26fff1b13763ddb7a6cc66a81cab407589b75409b2c5455c12bc2643517_amd64",
"Red Hat Trusted Artifact Signer 1.4:registry.redhat.io/rhtas/rekor-monitor-rhel9@sha256:3d551907e5a5b7fe8ca110d273a02f60296dbc3ca512af3a80715e9cfc4477e8_amd64"
]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "golang.org/x/crypto/ssh: golang: golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate"
}
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
Loading…
Loading…