{"id":"CVE-2026-34500","aliases":["BIT-tomcat-2026-34500","GHSA-24j9-x2wg-9qv6"],"url":"https://o3.security/vulnerability/CVE-2026-34500","summary":"Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled","details":"CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled and FFM is used in Apache Tomcat.\n\nThis 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.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fixes the issue.","published":"2026-04-09T19:36:52.857Z","modified":"2026-08-12T03:51:33.291858944Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},"epss":{"score":0.00469,"percentile":0.38151,"asOf":"2026-08-06"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote-ffm","fixedVersion":"9.0.117"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote-ffm","fixedVersion":"10.1.54"},{"ecosystem":"Maven","name":"org.apache.tomcat:tomcat-coyote-ffm","fixedVersion":"11.0.21"}],"fix":{"url":"https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208","label":"apache/tomcat@29b56a5"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/04/09/29"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34500.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/7rcl4zdxryc8hy3htyfyxkbqpxjtfdl2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34500"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/29b56a56ce9e7d044b6162a99af0f38529b3a208"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/c13e60e732ea6d07087293a41ad1866c20848271"},{"type":"WEB","url":"https://github.com/apache/tomcat/commit/ff589ab26e8250a2ca4286d986305318c033ff9f"},{"type":"PACKAGE","url":"https://github.com/apache/tomcat"},{"type":"WEB","url":"https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54"},{"type":"WEB","url":"https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21"},{"type":"WEB","url":"https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:33.291858944Z"}}