CVE-2026-55276: Apache Tomcat - Logged effective web.xml is incomplete
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100.
Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
References
- www.openwall.com/lists/oss-security/2026/06/29/23
- github.com/advisories/GHSA-mqg3-r7h5-24x4
- github.com/apache/tomcat/commit/e391c6b201eae2ad9707a1335aff68ab8b3e0f84
- github.com/apache/tomcat/commit/f844614c6d92eeb11e81e179606bf4c390f642dd
- lists.apache.org/thread/jy09xjlzn6r2qwvqoph8vcmf959yq68v
- nvd.nist.gov/vuln/detail/CVE-2026-55276
- tomcat.apache.org/security-10.html
- tomcat.apache.org/security-11.html
- tomcat.apache.org/security-9.html
Code Behaviors & Features
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