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GHSA-c5ph-rghf-fjfj

Apache Tomcat has an Improper Authentication vulnerability

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-55955

Packages

EcosystemPackageAffectedFixed in
Maven org.apache.tomcat:tomcat >= 11.0.0-M1, < 11.0.23 11.0.23
Maven org.apache.tomcat:tomcat >= 10.1.0-M1, < 10.1.56 10.1.56
Maven org.apache.tomcat:tomcat >= 9.0.13, < 9.0.119 9.0.119
Maven org.apache.tomcat:tomcat >= 8.5.38, <= 8.5.100 no fix listed
Maven org.apache.tomcat:tomcat >= 7.0.100, <= 7.0.109 no fix listed
Maven org.apache.tomcat:tomcat-tribes >= 11.0.0-M1, < 11.0.23 11.0.23
Maven org.apache.tomcat:tomcat-tribes >= 10.1.0-M1, < 10.1.56 10.1.56
Maven org.apache.tomcat:tomcat-tribes >= 9.0.13, < 9.0.119 9.0.119
Maven org.apache.tomcat:tomcat-tribes >= 8.5.38, <= 8.5.100 no fix listed
Maven org.apache.tomcat:tomcat-tribes >= 7.0.100, <= 7.0.109 no fix listed

Details

As written in the advisory (Markdown source, shown as plain text).

Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.118, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue.

References

External links from the advisory. They lead to third-party sites.