{"id":"RUSTSEC-2026-0049","aliases":["GHSA-pwjx-qhcg-rvj4"],"title":"CRLs not considered authoritative by Distribution Point due to faulty matching logic","summary":"CRLs not considered authoritative by Distribution Point due to faulty matching logic","severity":"none","vendor":"rustls-webpki","product":"rustls-webpki","ecosystem":"rust","affected":["rustls-webpki >= 0.102.0-alpha.0, < 0.103.10"],"patched":["rustls-webpki 0.103.10"],"published":"2026-03-20","updated":"2026-07-17","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/RUSTSEC-2026-0049","references":[{"url":"https://crates.io/crates/rustls-webpki"},{"url":"https://rustsec.org/advisories/RUSTSEC-2026-0049.html"}],"tags":["osv","rust"],"ingestedAt":"2026-07-17T19:00:51.897Z","slug":"RUSTSEC-2026-0049","body":"## Overview\n\nIf 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.\n\n## Affected packages\n\n- `rustls-webpki >= 0.102.0-alpha.0, < 0.103.10`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `rustls-webpki 0.103.10`","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}