Vulnerability Details CVE-2026-86247
Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations.
This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected.
Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 6.8%
CVSS Severity
CVSS v3 Score 7.4