CVE-2026-66422

CVE-2026-66422: Apache Tomcat: Servlet role references can bypass declarative role constraints

Vendor Apache Software Foundation
Product Apache Tomcat
Weakness CWE-285
Published August 25, 2026
Last update August 25, 2026

CVSS base score

What the vulnerability does

01Description

Improper Authorization vulnerability in Apache Tomcat cause by security-role-ref definitions being incorrectly used as role aliases within the Realm in additional to the correct usage with Request.isUserInRole(). This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.25 through 9.0.120. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.46 through 8.5.100, from 7.0.97 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.

Key dates

02Disclosure timeline

August 25, 2026 CVE published

Related vulnerabilities

04Related CVE