{"schema_version":"1.9.0","id":"GO-2026-5021","published":"2026-05-22T02:08:34Z","modified":"2026-08-14T16:45:10.054013949Z","aliases":["CVE-2026-42508","GHSA-5cgq-3rg8-m6cv"],"related":["CGA-cggg-9cv5-p6gh","RHSA-2026:23262","RHSA-2026:23264","RHSA-2026:35833","RHSA-2026:36796","RHSA-2026:37072","RHSA-2026:37123","RHSA-2026:41019","RHSA-2026:49944","RHSA-2026:51288"],"summary":"Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts","details":"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.","affected":[{"package":{"name":"golang.org/x/crypto","ecosystem":"Go","purl":"pkg:golang/golang.org/x/crypto"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.52.0"}]}],"ecosystem_specific":{"imports":[{"path":"golang.org/x/crypto/ssh/knownhosts","symbols":["hostKeyDB.IsRevoked"]}]},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-5021.json"}}],"references":[{"type":"REPORT","url":"https://go.dev/issue/79568"},{"type":"FIX","url":"https://go.dev/cl/781220"},{"type":"WEB","url":"https://groups.google.com/g/golang-announce/c/a082jnz-LvI"}],"database_specific":{"review_status":"REVIEWED","url":"https://pkg.go.dev/vuln/GO-2026-5021"},"credits":[{"name":"Omar Khaleel Ibrahim - mr3okk"}]}