Race Condition Affecting tomcat-native package, versions <0:2.0.16-1.amzn2023.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.22% (12th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-AMZN2023-TOMCATNATIVE-20850607
  • published13 Oct 2026
  • disclosed23 Sept 2026

Introduced: 23 Sep 2026

NewCVE-2026-86247  (opens in a new tab)
CWE-366  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 tomcat-native to version 0:2.0.16-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-3167.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-native package and not the tomcat-native package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1