CVE-2026-27140: Code execution vulnerability in SWIG code generation in cmd/go

Overview

Severity
Critical (CVSS 9.8)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U
Exploit Status
Not Exploited
Patch Tuesday
2026-Apr
Released
2026-04-11
Last Updated
2026-09-25
EPSS Score
0.66% (percentile: 50.0%)

Affected Products (9)

Open Source Software

  • azl3 golang 1.26.2-1 on Azure Linux 3.0
  • cbl2 golang 1.18.8-10 on CBL Mariner 2.0
  • cbl2 golang 1.22.7-5 on CBL Mariner 2.0
  • azl3 golang 1.25.8-1 on Azure Linux 3.0
  • azl3 golang 1.26.1-1 on Azure Linux 3.0
  • cbl2 msft-golang 1.25.8-1 on CBL Mariner 2.0
  • azl3 golang 1.25.9-1 on Azure Linux 3.0

Other

  • 21778-17084
  • 21117-21692

Security Updates (1)

Revision History

  • 2026-04-11: Information published.
  • 2026-04-14: Information published.
  • 2026-04-15: Information published.
  • 2026-06-03: Information published.
  • 2026-06-09: Information published.
  • 2026-09-03: Information published.
  • 2026-09-07: Information published.
  • 2026-09-09: Information published.
  • 2026-09-17: Information published.
  • 2026-09-25: Information published.