CVE-2026-42508criticalCWE-295

Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts

28Vexday Risk Score

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

ssvc Trackcvss 9.1epss 7.3%

exploitation probability

7.3%top 6% of all CVEs

observed exploitation

nono source reports it

Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.

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

Affected products

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

References