CVE-2026-93602
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. Attackers with a compromised trusted issuing authority can present revoked certificates that pass revocation checks under UnknownStatusPolicy::Allow, or cause incorrect errors under the default deny policy.
- Published Sep 18, 2026
- CVSS 5.9 medium
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available