VYPR
High severity7.5NVD Advisory· Published May 12, 2026· Updated May 15, 2026

CVE-2026-43513

CVE-2026-43513

Description

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.tomcat.embed:tomcat-embed-coreMaven
< 9.0.1189.0.118
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 10.1.0-M1, < 10.1.5510.1.55
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 11.0.0-M1, < 11.0.2211.0.22
org.apache.tomcat:tomcatMaven
< 9.0.1189.0.118
org.apache.tomcat:tomcatMaven
>= 10.1.0-M1, < 10.1.5510.1.55
org.apache.tomcat:tomcatMaven
>= 11.0.0-M1, < 11.0.2211.0.22
org.apache.tomcat:tomcat-catalinaMaven
< 9.0.1189.0.118
org.apache.tomcat:tomcat-catalinaMaven
>= 10.1.0-M1, < 10.1.5510.1.55
org.apache.tomcat:tomcat-catalinaMaven
>= 11.0.0-M1, < 11.0.2211.0.22

Affected products

39

Patches

Vulnerability mechanics

References

10

News mentions

0

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