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Critical severity9.1NVD Advisory· Published May 12, 2026· Updated Jun 17, 2026

CVE-2026-43515

CVE-2026-43515

Description

Improper Authorization vulnerability when multiple method constraints define an HTTP method for the same extension 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.

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

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

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

43

Patches

Vulnerability mechanics

References

10

News mentions

3