CVE-2026-93602
rustls-webpki before 0.103.10 CRL Revocation Check Bypass
CVSS Score
4.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-299 |
| Vendor | rustls |
| Product | webpki |
| Published | Sep 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
rustls / webpki
0.102.0-alpha.0 < 0.103.10 0.104.0-alpha.1 < 0.104.0-alpha.5
References
Credits
🔍 1seal