Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Apache | Tomcat | >= 7.0.97, <= 7.0.109 |
Related Weaknesses (CWE)
References
- https://lists.apache.org/thread/j5plylz1b2vhqvbkqn7k58nygxhcpk73Vendor AdvisoryMailing List
- http://www.openwall.com/lists/oss-security/2026/08/26/6Third Party AdvisoryMailing List
FAQ
What is CVE-2026-66422?
CVE-2026-66422 is a vulnerability with a CVSS score of 8.1 (HIGH). 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.isU...
How severe is CVE-2026-66422?
CVE-2026-66422 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-66422?
Check the references section above for vendor advisories and patch information. Affected products include: Apache Tomcat.