CVE-2026-27140
8.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Go toolchain | cmd/go | 0 < 1.25.9 | affected |
| Go toolchain | cmd/go | 1.26.0-0 < 1.26.2 | affected |
Weaknesses
- CWE-501: Trust Boundary Violation
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
cmd/go: golang: Go (golang) and cmd/go: Arbitrary Code Execution via malicious SWIG file names
Additional References
- https://access.redhat.com/security/cve/CVE-2026-27140
- https://bugzilla.redhat.com/show_bug.cgi?id=2456341
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-27140.json
- https://access.redhat.com/errata/RHSA-2026:16024
- https://access.redhat.com/errata/RHSA-2026:10217
- https://access.redhat.com/errata/RHSA-2026:10704
- https://access.redhat.com/errata/RHSA-2026:16698
- https://access.redhat.com/errata/RHSA-2026:16697
- https://access.redhat.com/errata/RHSA-2026:16694
- https://access.redhat.com/errata/RHSA-2026:16494
- https://access.redhat.com/errata/RHSA-2026:16498
- https://access.redhat.com/errata/RHSA-2026:16497
- https://access.redhat.com/errata/RHSA-2026:16021
- https://access.redhat.com/errata/RHSA-2026:10219
- https://access.redhat.com/errata/RHSA-2026:25182
- https://access.redhat.com/errata/RHSA-2026:23246
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
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