Moole Vulnerability Database

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High

CVE-2026-43513

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.

VectorNETWORK

PublishedMay 12, 2026, 16:16

Published Bysecurity@apache.org

Base Score

Score7.5

Affected Versions

Package (Ecosystem)IntroducedFixedLimit

org.apache.tomcat.embed:tomcat-embed-core(Maven)09.0.118N/A

org.apache.tomcat.embed:tomcat-embed-core(Maven)10.1.0-M110.1.55N/A

org.apache.tomcat.embed:tomcat-embed-core(Maven)11.0.0-M111.0.22N/A

org.apache.tomcat:tomcat(Maven)09.0.118N/A

org.apache.tomcat:tomcat(Maven)10.1.0-M110.1.55N/A

org.apache.tomcat:tomcat(Maven)11.0.0-M111.0.22N/A

org.apache.tomcat:tomcat-catalina(Maven)09.0.118N/A

org.apache.tomcat:tomcat-catalina(Maven)10.1.0-M110.1.55N/A

org.apache.tomcat:tomcat-catalina(Maven)11.0.0-M111.0.22N/A

References

Weakness Type

CWE-178

CVSS Metrics

Base Score

7.5

Vector String

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

Base SeverityHigh

Version

3.1

Attack Vector (AV)

NETWORK