Bug 2539393 (CVE-2026-86247) - CVE-2026-86247 tomcat-native: Apache Tomcat Native: Client certificate verification requirements can be down-graded via race condition
Summary: CVE-2026-86247 tomcat-native: Apache Tomcat Native: Client certificate verifi...
Keywords:
Status: NEW
Alias: CVE-2026-86247
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2542947 2542948
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-23 12:52 UTC by OSIDB Bzimport
Modified: 2026-09-29 05:50 UTC (History)
8 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-23 12:52:25 UTC 
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.
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