AUGUST 28, 2026
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Case File

CVE-2026-66422

HIGH · CVSS 8.1 EPSS 0.42%

Source: NVD + CISA KEV + EPSS · Published 2026-08-25 · Last synced 2026-08-28

CyberRota Analysis

AI-Generated

Apache Tomcat versions 11.0.0-M1 to 11.0.24, 10.1.0-M1 to 10.1.57, and 9.0.25 to 9.0.120 are vulnerable due to improper authorization stemming from incorrect usage of security-role-ref definitions as role aliases. This vulnerability could allow unauthorized access to resources, potentially compromising application security. Organizations using affected versions, especially those still on unsupported releases like 8.5.x and 7.0.x, should prioritize upgrading to the recommended secure versions to mitigate risks.

CVE
CVE-2026-66422
Severity
HIGH
CVSS
8.1
EPSS
0.42%
Apache

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)