{"id":"RUSTSEC-2026-0049","revision":null,"records":[{"revision":"1746aea91ef649e8a2228f862446282a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-93602","aliases":[],"title":"rustls-webpki before 0.103.10 CRL Revocation Check Bypass","description":"rustls-webpki versions before 0.103.10 and 0.104.0-alpha.5 contain faulty CRL authority-matching logic that compares only the first distributionPoint against each CRL's IssuingDistributionPoint, ignoring additional distributionPoints. 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With `UnknownStatusPolicy::Allow` this would lead to inappropriate acceptance of revoked certificates.\n\nThis vulnerability is thought to be of limited impact. This is because both the certificate and CRL are signed -- an attacker would need to compromise a trusted issuing authority to trigger this bug.  An attacker with such capabilities could likely bypass revocation checking through other more impactful means (such as publishing a valid, empty CRL.)\n\nMore likely, this bug would be latent in normal use, and an attacker could leverage faulty revocation checking to continue using a revoked credential.","state":0,"publishedAt":"2026-03-20T21:51:17+00:00","modifiedAt":"2026-09-19T03:55:49.5296516+00:00","affected":[{"ecosystem":"crates.io","name":"rustls-webpki","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.102.0-alpha.0"},{"kind":"fixed","version":"0.103.10"}]}],"versions":[],"rawVersionEvidence":null},{"ecosystem":"crates.io","name":"rustls-webpki","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.104.0-alpha.1"},{"kind":"fixed","version":"0.104.0-alpha.5"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/rustls/webpki/security/advisories/GHSA-pwjx-qhcg-rvj4","https://github.com/rustls/webpki","https://rustsec.org/advisories/RUSTSEC-2026-0049.html"],"sourceUrl":"https://github.com/advisories/GHSA-pwjx-qhcg-rvj4","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-pwjx-qhcg-rvj4","identifiers":["GHSA-pwjx-qhcg-rvj4","CVE-2026-93602","RUSTSEC-2026-0049"]},"retained":false,"historicalAffected":[]},{"revision":"8838846d08994fe2961cd7757c6cd0ea","observedAt":"2026-10-24T13:19:54.901+00:00","statement":{"source":"osv","id":"RUSTSEC-2026-0049","aliases":["CVE-2026-93602","GHSA-pwjx-qhcg-rvj4"],"title":"CRLs not considered authoritative by Distribution Point due to faulty matching logic","description":"If a certificate had more than one `distributionPoint`, then only the first `distributionPoint` would be considered against each CRL's `IssuingDistributionPoint` `distributionPoint`, and then the certificate's subsequent `distributionPoint`s would be ignored.\n\nThe impact was that correctly provided CRLs would not be consulted to check revocation. With `UnknownStatusPolicy::Deny` (the default) this would lead to incorrect but safe `Error::UnknownRevocationStatus`. With `UnknownStatusPolicy::Allow` this would lead to inappropriate acceptance of revoked certificates.\n\nThis vulnerability is thought to be of limited impact. This is because both the certificate and CRL are signed -- an attacker would need to compromise a trusted issuing authority to trigger this bug.  An attacker with such capabilities could likely bypass revocation checking through other more impactful means (such as publishing a valid, empty CRL.)\n\nMore likely, this bug would be latent in normal use, and an attacker could leverage faulty revocation checking to continue using a revoked credential.\n\nThis vulnerability is identified as [GHSA-pwjx-qhcg-rvj4](https://github.com/rustls/webpki/security/advisories/GHSA-pwjx-qhcg-rvj4). Thank you to [@1seal](https://github.com/1seal) for the report.","state":0,"publishedAt":"2026-03-20T12:00:00+00:00","modifiedAt":"2026-09-19T08:42:27+00:00","affected":[{"ecosystem":"crates.io","name":"rustls-webpki","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0.102.0-alpha.0"},{"kind":"fixed","version":"0.103.10"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[],"references":["https://crates.io/crates/rustls-webpki","https://rustsec.org/advisories/RUSTSEC-2026-0049.html"],"sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0049","license":"OSV · upstream source license applies","key":"osv:RUSTSEC-2026-0049","identifiers":["RUSTSEC-2026-0049","CVE-2026-93602","GHSA-pwjx-qhcg-rvj4"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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