CVE-2026-55276CWE-670

Apache Tomcat: Logged effective web.xml is incomplete

Critical · published June 29, 2026

CVSS v3.1
9.1
EPSS
1%
Percentile
48.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00607 · 48.3th percentile
Weakness
CWE-670 · Always-Incorrect Control Flow Implementation
Published
2026-06-29T20:42Z
EPSS history
Timeline
  • 29 JUN 20:42Z
    Apache Tomcat: Logged effective web.xml is incomplete
    cvelistv5