CVE-2026-86247
Apache Tomcat Native: Client certificate requirements can be down-graded
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-366 |
| Vendor | apache software foundation |
| Product | apache tomcat native |
| Published | Sep 23, 2026 |
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Affected Versions
Apache Software Foundation / Apache Tomcat Native
2.0.0 ≤ 2.0.15 1.3.0 ≤ 1.3.8