CVE-2026-66422 Security Details

CVE ID

CVE-2026-66422

CWE

CWE-285

CVE Description

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.

Published

Aug 26, 2026

CVSS Score & Severity

2.3Low

CVSS Vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

EPSS Score

0.431%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

org/apache/catalina/realm/RealmBase.hasResourcePermission(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;[Lorg/apache/catalina/deploy/SecurityConstraint;Lorg/apache/catalina/Context;)Z

JVM

org/apache/catalina/realm/RealmBase.hasResourcePermission(Lorg/apache/catalina/connector/Request;Lorg/apache/catalina/connector/Response;[Lorg/apache/tomcat/util/descriptor/web/SecurityConstraint;Lorg/apache/catalina/Context;)Z

JVM

org/apache/catalina/realm/RealmBase.hasRole(Lorg/apache/catalina/Wrapper;Ljava/security/Principal;Ljava/lang/String;)Z

JVMVulnerable params: 0, 2

Affected Ecosystems

affected

Source

National Vulnerability Database

References

Apache · AnnouncementPROJECT