Improper Handling of Case Sensitivity Affecting tomcat-webapps package, versions <1:9.0.120-2.el9_8


Severity

Recommended
medium

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.5% (41st percentile)

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  • Snyk IDSNYK-ORACLE9-TOMCATWEBAPPS-19922329
  • published18 Sept 2026
  • disclosed12 May 2026

Introduced: 12 May 2026

CVE-2026-43513  (opens in a new tab)
CWE-178  (opens in a new tab)

How to fix?

Upgrade Oracle:9 tomcat-webapps to version 1:9.0.120-2.el9_8 or higher.
This issue was patched in ELSA-2026-68660.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat-webapps package and not the tomcat-webapps package as distributed by Oracle. See How to fix? for Oracle:9 relevant fixed versions and status.

Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected.

Users are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue.

CVSS Base Scores

version 3.1