{"id":"CVE-2026-86248","title":"CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9…","summary":"CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9…","severity":"none","vendor":"Apache Software Foundation","product":"Apache Tomcat","affected":["apache_tomcat >= 11.0.0-M14 <= 11.0.25","apache_tomcat >= 10.1.22 <= 10.1.59","apache_tomcat >= 9.0.92 <= 9.0.121"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T12:17:08.237","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86248","references":[{"url":"https://lists.apache.org/thread/nmkmjp9l53y8h3oc4n8fc0bkw9dv15sk","label":"security@apache.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-23T12:24:04.186Z","slug":"CVE-2026-86248","body":"## Overview\n\nCLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.\n\n\n\nThis issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121.\n\n\n\nUsers are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}