CVE-2026-86247

HighCVSS 7.4/10Last modified Oct 6, 2026

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.

Metrics

CVSS 3.1 7.4/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-366

Affected software

No affected versions have been published.

Timeline

Published: Sep 23, 2026
Last modified: Oct 6, 2026
NVD status: Analyzed

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