CVE-2026-55276

Apache Tomcat: Logged effective web.xml is incomplete

State: Published
Severity: 9.1 Critical
Published: Jun 29, 2026
Updated: Jun 30, 2026
Reserved: Jun 16, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	CISA-ADP

Weaknesses

CWE-670 Always-Incorrect Control Flow Implementation

Affected Products

Product	Versions
Apache TomcatApache Software Foundation	11.0.0-M1 through 11.0.22Affected 10.1.0-M1 through 10.1.55Affected 9.0.0.M1 through 9.0.118Affected 8.5.0 through 8.5.100Affected before 8.0.0Not affected

References

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