CVE-2026-27140
Code execution vulnerability in SWIG code generation in cmd/go
- State
- Published
- Severity
- 8.8 High
- Published
- Apr 8, 2026
- Updated
- Sep 10, 2026
- Reserved
- Feb 17, 2026
Description
SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at build time due to trust layer bypass.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | CISA-ADP |
| 3.1 | 9.0 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H | redhat-SADP |
Weaknesses
- CWE-641 Improper Restriction of Names for Files and Other Resources
Affected Products
| Product | Versions |
|---|---|
cmd/goGo toolchain |
|
References
- https://go.dev/cl/763768
- https://go.dev/issue/78335
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
- https://pkg.go.dev/vuln/GO-2026-4871
- https://access.redhat.com/security/cve/CVE-2026-27140vdb-entry
- RHBZ#2456341issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27140.json
- https://access.redhat.com/errata/RHSA-2026:16024vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:10217vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:10704vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16698vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16697vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16694vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16494vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16498vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16497vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:16021vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:10219vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:56854vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:34099vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:25182vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:23246vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:57408vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:57545vendor-advisory
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