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…

PriorityP352high8.1CVSS 3.1

AVNACLPRLUINSUCNIHAH

EPSS

0.57%

45.5th percentile

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.

Affected

14 ranges

Vendor	Product	Version range	Fixed in
apache	tomcat	—	—
apache	tomcat	>= 10.1.0 < 10.1.58	10.1.58
apache	tomcat	>= 11.0.0 < 11.0.25	11.0.25
apache	tomcat	7.0.97 – 7.0.109	—
apache	tomcat	>= 8.5.46 < 9.0.121	9.0.121
apache_software_foundation	apache_tomcat	10.1.0-M1 – 10.1.57	—
apache_software_foundation	apache_tomcat	11.0.0-M1 – 11.0.24	—
apache_software_foundation	apache_tomcat	7.0.97 – 7.0.109	—
apache_software_foundation	apache_tomcat	8.5.46 – 8.5.100	—
apache_software_foundation	apache_tomcat	9.0.25 – 9.0.120	—
debian	tomcat10	—	—
debian	tomcat11	—	—
debian	tomcat9	—	—
pki-deps_10.6	pki-servlet-engine	—	—

CVSS provenance

nvdv3.18.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

vendor_redhat8.1HIGH

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