CVE-2026-55276
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk29th percentile — higher than 29% of all known CVEs
Summary
An Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat causes special roles and empty authorization constraints to be omitted when the effective web.xml is logged. Affected versions include 11.0.0-M1 through 11.0.22, 10.1.0-M1 through 10.1.55, 9.0.0.M1 through 9.0.118, and 8.5.0 through 8.5.100.
Risk Assessment
The organization may lack full visibility into the actual security configuration, complicating audits and potentially leading to incorrect risk assessment regarding access controls.
Recommendation
It is recommended to upgrade Apache Tomcat to version 11.0.23, 10.1.56, or 9.0.119, which fix this vulnerability.
Original NVD description (English source)
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. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119 which fixes the issue.