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

GO-2026-5021 · CVE-2026-42508 · GHSA-5cgq-3rg8-m6cv

Published May 22, 2026 · Modified Jun 27, 2026

Description

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.

References

REPORT https://go.dev/issue/79568
FIX https://go.dev/cl/781220
WEB https://groups.google.com/g/golang-announce/c/a082jnz-LvI

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