Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled
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 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.
02 / AFFECTED SOFTWARE
Affected packages
13 explicit affected versions
66 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
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.
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 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.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2026/04/09/29
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34500.json
- https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2
- https://nvd.nist.gov/vuln/detail/CVE-2026-34500
- https://github.com/apache/tomcat
- https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208
- https://github.com/apache/tomcat/commit/c13e60e732ea6d07087293a41ad1866c20848271
- https://github.com/apache/tomcat/commit/ff589ab26e8250a2ca4286d986305318c033ff9f
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54
- https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117