CVE-2026-86248
CLIENT_CERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This 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. Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
- Published Sep 23, 2026
- CVSS 9.8 critical
- 0.4% chance of exploitation in the next 30 days (EPSS)
- A fix is available