Vulnerability-Lookup

RHSA-2026:3469

Vulnerability from csaf_redhat - Published: 2026-03-02 01:34 - Updated: 2026-04-11 14:08

Summary

Red Hat Security Advisory: golang security update

Severity

Important

Notes

Topic: An update for golang is now available for Red Hat Enterprise Linux 9.4 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details: The golang packages provide the Go programming language compiler. Security Fix(es): * golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip (CVE-2025-61728) * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * cmd/cgo: Potential code smuggling via doc comments in cmd/cgo (CVE-2025-61732) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

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-2025-61726

A flaw was found in the net/url package in the Go standard library. The package does not enforce a limit on the number of unique query parameters it parses. A Go application using the net/http.Request.ParseForm method will try to process all parameters provided in the request. A specially crafted HTTP request containing a massive number of query parameters will cause the application to consume an excessive amount of memory, eventually causing the application to crash or become unresponsive, resulting in a denial of service.

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Vendor Fix For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:3469

Workaround Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

CVE-2025-61728

A flaw was found in the archive/zip package in the Go standard library. A super-linear file name indexing algorithm is used in the first time a file in an archive is opened. A crafted zip archive containing a specific arrangement of file names can cause an excessive CPU and memory consumption. A Go application processing a malicious archive can become unresponsive or crash, resulting in a denial of service.

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE-770 - Allocation of Resources Without Limits or Throttling

Workaround To mitigate this vulnerability, implement a timeout in your archive/zip processing logic to abort the operation if it exceeds a few seconds, preventing the application from consuming an excessive amount of resources.

CVE-2025-61732

A flaw was found in Go's 'cgo tool'. This vulnerability arises from a discrepancy in how Go and C/C++ comments are parsed, which allows for malicious code to be hidden within comments and then "smuggled" into the compiled `cgo` binary. An attacker could exploit this to embed and execute arbitrary code, potentially leading to significant system compromise.

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References

URL

Category

	https://access.redhat.com/errata/RHSA-2026:3469	self
	https://access.redhat.com/security/updates/classi…	external
	https://bugzilla.redhat.com/show_bug.cgi?id=2434431	external
	https://bugzilla.redhat.com/show_bug.cgi?id=2434432	external
	https://bugzilla.redhat.com/show_bug.cgi?id=2437016	external
	https://security.access.redhat.com/data/csaf/v2/a…	self
	https://access.redhat.com/security/cve/CVE-2025-61726	self
	https://bugzilla.redhat.com/show_bug.cgi?id=2434432	external
	https://www.cve.org/CVERecord?id=CVE-2025-61726	external
	https://nvd.nist.gov/vuln/detail/CVE-2025-61726	external
	https://go.dev/cl/736712	external
	https://go.dev/issue/77101	external
	https://groups.google.com/g/golang-announce/c/Vd2…	external
	https://pkg.go.dev/vuln/GO-2026-4341	external
	https://access.redhat.com/security/cve/CVE-2025-61728	self
	https://bugzilla.redhat.com/show_bug.cgi?id=2434431	external
	https://www.cve.org/CVERecord?id=CVE-2025-61728	external
	https://nvd.nist.gov/vuln/detail/CVE-2025-61728	external
	https://go.dev/cl/736713	external
	https://go.dev/issue/77102	external
	https://pkg.go.dev/vuln/GO-2026-4342	external
	https://access.redhat.com/security/cve/CVE-2025-61732	self
	https://bugzilla.redhat.com/show_bug.cgi?id=2437016	external
	https://www.cve.org/CVERecord?id=CVE-2025-61732	external
	https://nvd.nist.gov/vuln/detail/CVE-2025-61732	external
	https://go.dev/cl/734220	external
	https://go.dev/issue/76697	external
	https://groups.google.com/g/golang-announce/c/K09…	external
	https://pkg.go.dev/vuln/GO-2026-4433	external

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          "title": "Statement"
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          "category": "workaround",
          "details": "To mitigate this vulnerability, implement a timeout in your archive/zip processing logic to abort the operation if it exceeds a few seconds, preventing the application from consuming an excessive amount of resources.",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
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            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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      "title": "golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip"
    },
    {
      "cve": "CVE-2025-61732",
      "discovery_date": "2026-02-05T05:00:47.678207+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
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          "text": "A flaw was found in Go\u0027s \u0027cgo tool\u0027. This vulnerability arises from a discrepancy in how Go and C/C++ comments are parsed, which allows for malicious code to be hidden within comments and then \"smuggled\" into the compiled `cgo` binary. An attacker could exploit this to embed and execute arbitrary code, potentially leading to significant system compromise.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "cmd/cgo: Go cgo: Code smuggling due to comment parsing discrepancy",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This is an Important vulnerability in the `cmd/cgo` component of the Go toolchain. A parsing discrepancy between Go and C/C++ comments could allow for code smuggling into the resulting `cgo` binary. This primarily affects systems where untrusted Go modules utilizing `cgo` are built, impacting Red Hat Enterprise Linux and OpenShift Container Platform.",
          "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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          "category": "external",
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      "title": "cmd/cgo: Go cgo: Code smuggling due to comment parsing discrepancy"
    }
  ]
}

CVE-2025-61728 (GCVE-0-2025-61728)

Vulnerability from cvelistv5 – Published: 2026-01-28 19:30 – Updated: 2026-01-29 18:30

Title

Excessive CPU consumption when building archive index in archive/zip

Summary

archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.

Severity ?

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE

CWE-407 - Inefficient Algorithmic Complexity

Assigner

References

URL

Tags

	https://go.dev/cl/736713
	https://go.dev/issue/77102
	https://groups.google.com/g/golang-announce/c/Vd2…
	https://pkg.go.dev/vuln/GO-2026-4342

Impacted products

	Vendor	Product	Version
	Go standard library	archive/zip	Affected: 0 , < 1.24.12 (semver) Affected: 1.25.0 , < 1.25.6 (semver)

Credits

Jakub Ciolek

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-61728",
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        "title": "CISA ADP Vulnrichment"
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          "defaultStatus": "unaffected",
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            {
              "name": "Reader.initFileList"
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              "name": "Reader.Open"
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      "title": "Excessive CPU consumption when building archive index in archive/zip"
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  "cveMetadata": {
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CVE-2025-61726 (GCVE-0-2025-61726)

Vulnerability from cvelistv5 – Published: 2026-01-28 19:30 – Updated: 2026-01-29 18:31

Title

Memory exhaustion in query parameter parsing in net/url

Summary

The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption.

Severity ?

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

References

URL

Tags

	https://go.dev/cl/736712
	https://go.dev/issue/77101
	https://groups.google.com/g/golang-announce/c/Vd2…
	https://pkg.go.dev/vuln/GO-2026-4341

Impacted products

	Vendor	Product	Version
	Go standard library	net/url	Affected: 0 , < 1.24.12 (semver) Affected: 1.25.0 , < 1.25.6 (semver)

Credits

jub0bs

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-61726",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-29T18:31:39.150633Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-29T18:31:59.685Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "net/url",
          "product": "net/url",
          "programRoutines": [
            {
              "name": "parseQuery"
            },
            {
              "name": "ParseQuery"
            },
            {
              "name": "URL.Query"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.24.12",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.25.6",
              "status": "affected",
              "version": "1.25.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "jub0bs"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-400: Uncontrolled Resource Consumption",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-28T19:30:31.215Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/736712"
        },
        {
          "url": "https://go.dev/issue/77101"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4341"
        }
      ],
      "title": "Memory exhaustion in query parameter parsing in net/url"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2025-61726",
    "datePublished": "2026-01-28T19:30:31.215Z",
    "dateReserved": "2025-09-30T15:05:03.605Z",
    "dateUpdated": "2026-01-29T18:31:59.685Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-61732 (GCVE-0-2025-61732)

Vulnerability from cvelistv5 – Published: 2026-02-05 03:42 – Updated: 2026-02-05 14:57

Title

Potential code smuggling via doc comments in cmd/cgo

Summary

A discrepancy between how Go and C/C++ comments were parsed allowed for code smuggling into the resulting cgo binary.

Severity ?

8.6 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

CWE

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Assigner

References

URL

Tags

	https://go.dev/cl/734220
	https://go.dev/issue/76697
	https://groups.google.com/g/golang-announce/c/K09…
	https://pkg.go.dev/vuln/GO-2026-4433

Impacted products

	Vendor	Product	Version
	Go toolchain	cmd/cgo	Affected: 0 , < 1.24.13 (semver) Affected: 1.25.0-0 , < 1.25.7 (semver)

Credits

RyotaK (https://ryotak.net) of GMO Flatt Security Inc.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 8.6,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "REQUIRED",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-61732",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-02-05T14:56:35.952364Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-94",
                "description": "CWE-94 Improper Control of Generation of Code (\u0027Code Injection\u0027)",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-02-05T14:57:44.851Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "cmd/cgo",
          "product": "cmd/cgo",
          "vendor": "Go toolchain",
          "versions": [
            {
              "lessThan": "1.24.13",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.25.7",
              "status": "affected",
              "version": "1.25.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "RyotaK (https://ryotak.net) of GMO Flatt Security Inc."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A discrepancy between how Go and C/C++ comments were parsed allowed for code smuggling into the resulting cgo binary."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-94: Improper Control of Generation of Code (\u0027Code Injection\u0027)",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-05T03:42:26.392Z",
        "orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
        "shortName": "Go"
      },
      "references": [
        {
          "url": "https://go.dev/cl/734220"
        },
        {
          "url": "https://go.dev/issue/76697"
        },
        {
          "url": "https://groups.google.com/g/golang-announce/c/K09ubi9FQFk"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2026-4433"
        }
      ],
      "title": "Potential code smuggling via doc comments in cmd/cgo"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
    "assignerShortName": "Go",
    "cveId": "CVE-2025-61732",
    "datePublished": "2026-02-05T03:42:26.392Z",
    "dateReserved": "2025-09-30T15:05:03.606Z",
    "dateUpdated": "2026-02-05T14:57:44.851Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

Sightings

Author	Source	Type	Date

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.

Action not permitted

RHSA-2026:3469

CVE-2025-61728 (GCVE-0-2025-61728)

CVE-2025-61726 (GCVE-0-2025-61726)

CVE-2025-61732 (GCVE-0-2025-61732)

Tags

Sightings

Nomenclature