CVE-2026-66422

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
UNKNOWN
---
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apachetomcat
𝑥
≤ 11.0.24
CNA
apachetomcat
𝑥
≤ 10.1.57
CNA
apachetomcat
9.0.25 ≤
𝑥
≤ 9.0.120
CNA
apachetomcat
8.5.46 ≤
𝑥
≤ 8.5.100
CNA
apachetomcat
7.0.97 ≤
𝑥
≤ 7.0.109
CNA