CVE-2026-39828mediumCWE-281

Invoking bypass of certificate restrictions in golang.org/x/crypto/ssh

13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.3epss 0.4%

exploitation probability

0.4%top 70% of all CVEs

observed exploitation

nono source reports it

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.

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

Affected products

golang.org/x/crypto · golang.org/x/crypto/ssh

References