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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Go toolchain | cmd/go | < 1.25.9; >= 1.26.0-0, < 1.26.2 |
| Red Hat | Red Hat Enterprise Linux 10 | — |
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support | — |
| Red Hat | Red Hat Enterprise Linux 8 | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | — |
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Telecommunications Update Service | — |
| Red Hat | Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service | — |
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9 | — |
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — |
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support | — |
| Red Hat | Red Hat OpenShift Container Platform 4.16 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.17 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.18 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
| Red Hat | Red Hat OpenShift Container Platform 4.19 | — |
References
- https://go.dev/cl/763768Release Notes
- https://go.dev/issue/78335Issue Tracking
- https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing List, Release Notes
- https://pkg.go.dev/vuln/GO-2026-4871Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:10217
- https://access.redhat.com/errata/RHSA-2026:10219
- https://access.redhat.com/errata/RHSA-2026:10704
- https://access.redhat.com/errata/RHSA-2026:16021
- https://access.redhat.com/errata/RHSA-2026:16024
- https://access.redhat.com/errata/RHSA-2026:16494
- https://access.redhat.com/errata/RHSA-2026:16497
- https://access.redhat.com/errata/RHSA-2026:16498
- https://access.redhat.com/errata/RHSA-2026:16694
- https://access.redhat.com/errata/RHSA-2026:16697
- https://access.redhat.com/errata/RHSA-2026:16698
- https://access.redhat.com/errata/RHSA-2026:23246
- https://access.redhat.com/errata/RHSA-2026:25182
- https://access.redhat.com/errata/RHSA-2026:34099
- https://access.redhat.com/errata/RHSA-2026:56854
- https://access.redhat.com/errata/RHSA-2026:57408
- https://access.redhat.com/errata/RHSA-2026:57545
- 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
Timeline
- Published
- Apr 8, 2026
- Last modified
- Sep 10, 2026
- NVD status
- Modified