CVE-2026-27140 — HIGH (8.8)

Q: What is CVE-2026-27140?

CVE-2026-27140 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.

Q: How severe is CVE-2026-27140?

CVE-2026-27140 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-27140?

Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.

Vulnerability 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.

CVSS Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Golang	Go	< 1.25.9

Related Weaknesses (CWE)

CWE-863

References

https://go.dev/cl/763768Release Notes
https://go.dev/issue/78335Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWURelease NotesMailing List
https://pkg.go.dev/vuln/GO-2026-4871Vendor Advisory

FAQ

What is CVE-2026-27140?

CVE-2026-27140 is a vulnerability with a CVSS score of 8.8 (HIGH). 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.

How severe is CVE-2026-27140?

CVE-2026-27140 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-27140?

Check the references section above for vendor advisories and patch information. Affected products include: Golang Go.