CVE-2026-56854

Description

The source-address critical option in the Permissions returned by an authentication callback was only enforced for the PublicKeyCallback and VerifiedPublicKeyCallback paths, extending the fix for CVE-2026-46595. Permissions returned by the PasswordCallback, KeyboardInteractiveCallback, NoClientAuthCallback, and GSSAPIWithMICConfig.AllowLogin callbacks were not validated against the client's remote address, so a source-address restriction set by those callbacks was silently ignored. The check is now applied to the Permissions returned by any authentication callback.

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Produits concernés

• golang.org/x/crypto/ssh

Scores CVSS

Faiblesses (CWE)

• CWE-863

Références

• https://go.dev/cl/797040
• https://go.dev/issue/80213
• https://pkg.go.dev/vuln/GO-2026-6303

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories