Apache Tomcat: CLIENT_CERT authentication does not fail as expected
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, from 9.0.92 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-34500US | — | — | ||
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-… | ||||
02
references
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2026/04/09/29WEB
- https://github.com/apache/tomcatPACKAGE
- https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208WEB
- https://github.com/apache/tomcat/commit/c13e60e732ea6d07087293a41ad1866c20848271WEB
- https://github.com/apache/tomcat/commit/ff589ab26e8250a2ca4286d986305318c033ff9fWEB
- https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-34500ADVISORY
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54WEB
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