GitHub Advisoryadvisory · Go

GHSA-45gg-vh54-h5m9 golang.org/x/crypto vulnerable to invoking bypass of certificate restrictions

MEDIUM Published 2026-06-25 Modified 2026-07-20 Official page ↗
Aliases
CVE-2026-39828
Ecosystem
Go
Packages
golang.org/x/crypto
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Weaknesses
CWE-281, CWE-295
Reviewed
2026-06-25

Affected packages

• Go golang.org/x/crypto: < 0.52.0 → fixed in 0.52.0

Description

When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently discarded, potentially dropping certificate restrictions such as force-command after a second factor succeeded. Returning non-nil Permissions with PartialSuccessError now results in a connection error.

Related

Alias · CVE (1)

  • CVE-2026-39828 When an SSH server authentication callback returned PartialSuccessError with non-nil Permissions, those permissions were silently… vulnerability

Weakness · CWE (2)

  • CWE-281 Improper Preservation of Permissions weakness
  • CWE-295 Improper Certificate Validation weakness

References