CVE-2026-55276

Updated on 29 Jun 2026

Severity

9.1 Critical severity

Details

CVSS score
9.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Overview

About vulnerability

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.

Details

Affected product:
Ubuntu 16.04 ELS , Ubuntu 18.04 ELS
Affected packages:
tomcat8 @ 8.0.32-1 (+3 more)

Fixes