{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42508", "assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "state": "PUBLISHED", "assignerShortName": "Go", "dateReserved": "2026-04-28T00:21:12.792Z", "datePublished": "2026-05-22T02:31:27.644Z", "dateUpdated": "2026-05-22T02:31:27.644Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc", "shortName": "Go", "dateUpdated": "2026-05-22T02:31:27.644Z"}, "title": "Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts", "descriptions": [{"lang": "en", "value": "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": [{"vendor": "golang.org/x/crypto", "product": "golang.org/x/crypto/ssh/knownhosts", "collectionURL": "https://pkg.go.dev", "packageName": "golang.org/x/crypto/ssh/knownhosts", "versions": [{"version": "0", "lessThan": "0.52.0", "status": "affected", "versionType": "semver"}], "programRoutines": [{"name": "hostKeyDB.IsRevoked"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-295: Improper Certificate Validation"}]}], "references": [{"url": "https://go.dev/issue/79568"}, {"url": "https://go.dev/cl/781220"}, {"url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"}, {"url": "https://pkg.go.dev/vuln/GO-2026-5021"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "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."}], "id": "CVE-2026-42508", "lastModified": "2026-05-22T04:16:25.440", "metrics": {}, "published": "2026-05-22T04:16:25.440", "references": [{"source": "security@golang.org", "url": "https://go.dev/cl/781220"}, {"source": "security@golang.org", "url": "https://go.dev/issue/79568"}, {"source": "security@golang.org", "url": "https://groups.google.com/g/golang-announce/c/a082jnz-LvI"}, {"source": "security@golang.org", "url": "https://pkg.go.dev/vuln/GO-2026-5021"}], "sourceIdentifier": "security@golang.org", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,0.52.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "golang.org/x/crypto/ssh/knownhosts", "source": "cna", "vendor": "golang.org/x/crypto"}, "product": "ssh", "vendor": "golang"}], "created": "2026-05-22T04:30:25.964184+00:00", "updated": "2026-05-22T12:38:04.036842+00:00", "vendors": ["golang", "golang$PRODUCT$ssh"], "weaknesses": ["CWE-640"]}