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CVE

CVE-2026-27140

SWIG file names containing 'cgo' and well-crafted payloads could lead to code smuggling and arbitrary code execution at

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.

HIGH · CVSS 8.8 EPSS 0.00015
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
▤

Affected Products & Versions

2
golang go< 1.25.9
golang go>= 1.26.0 and < 1.26.2
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go toolchain fixed in 1.25.9, 1.26.2
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · security@golang.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Apr 2026 · 02:16 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

24
msrcCVE-2026-27140
suse-csafopenSUSE-SU-2026:20703-1
suse-csafopenSUSE-SU-2026:10673-1
suse-csafSUSE-SU-2026:1580-1
suse-csafSUSE-SU-2026:1581-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://go.dev/cl/763768Release Notes
https://go.dev/issue/78335Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWUMailing ListRelease Notes
https://pkg.go.dev/vuln/GO-2026-4871Vendor Advisory
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