Riskcovery

CVE-2026-86247

Apache Tomcat Native: Client certificate requirements can be down-graded

State
Published
Severity
7.4 High
Published
Sep 23, 2026
Updated
Sep 23, 2026
Reserved
Sep 6, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.4 HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NCISA-ADP

Weaknesses

  • CWE-366 Race condition within a thread

Affected Products

ProductVersions
Apache Tomcat NativeApache Software Foundation
  • 2.0.0 through 2.0.15Affected
  • 1.3.0 through 1.3.8Affected

References

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