RHSA-2026:16694

Vulnerability from csaf_redhat - Published: 2026-05-13 02:21 - Updated: 2026-10-09 23:21
Summary
Red Hat Security Advisory: go-toolset:rhel8 security update
Severity
Important
Notes
Topic: An update for the go-toolset:rhel8 module is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service. 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: Go Toolset provides the Go programming language tools and libraries. Go is alternatively known as golang. Security Fix(es): * cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names (CVE-2026-27140) 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-2026-27140

A flaw was found in the Go programming language (golang) and its command-line tool (cmd/go). A remote attacker could exploit this during the build process by crafting malicious SWIG (Simplified Wrapper and Interface Generator) file names that contain "cgo" and specific payloads. This could lead to code smuggling and arbitrary code execution, bypassing trust mechanisms and allowing the attacker to run unauthorized code.

9.0 (Critical)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CWE-641 - Improper Restriction of Names for Files and Other Resources
Affected products
Product Identifier Version Remediation
Unresolved product id: AppStream-8.8.0.Z.E4S:delve-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:delve-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:delve-debuginfo-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:delve-debugsource-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.ppc64le::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.ppc64le::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-bin-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.ppc64le::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-bin-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-docs-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-misc-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-race-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-src-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.E4S:golang-tests-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:delve-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:delve-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:delve-debuginfo-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:delve-debugsource-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.src::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-bin-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-docs-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-misc-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-race-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-src-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Unresolved product id: AppStream-8.8.0.Z.TUS:golang-tests-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8 —
Vendor Fix fix
Threats
Impact Important
References
To clipboard 

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      "cwe": {
        "id": "CWE-641",
        "name": "Improper Restriction of Names for Files and Other Resources"
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      "discovery_date": "2026-04-08T02:01:26.299804+00:00",
      "ids": [
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          "text": "2456341"
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      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Go programming language (golang) and its command-line tool (cmd/go). A remote attacker could exploit this during the build process by crafting malicious SWIG (Simplified Wrapper and Interface Generator) file names that contain \"cgo\" and specific payloads. This could lead to code smuggling and arbitrary code execution, bypassing trust mechanisms and allowing the attacker to run unauthorized code.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names",
          "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"
        }
      ],
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            "AppStream-8.8.0.Z.TUS:delve-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:delve-debuginfo-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:delve-debugsource-0:1.9.1-1.module+el8.8.0+16778+5fbb74f5.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.src::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:go-toolset-0:1.19.13-4.module+el8.8.0+23976+18ba1869.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.src::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-bin-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-docs-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-misc-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-race-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.x86_64::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-src-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8",
            "AppStream-8.8.0.Z.TUS:golang-tests-0:1.19.13-24.module+el8.8.0+24268+9f9e0e19.noarch::go-toolset:rhel8"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names"
    }
  ]
}



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