Apache Tomcat FORM Auth Bypass (v11.0.0-M1 to 11.0.24)
CVE-2026-68525 Published on August 25, 2026
Apache Tomcat: Redirect after FORM auth may bypass method specific constraints
Incorrect Authorization vulnerability in Apache Tomcat's FORM authentication process allows the bypassing of a security constraint that limits user has access to a resource POST but not GET.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.0.M1 through 9.0.120.
The following versions were EOL at the time the CVE was created but are
known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 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 fixes the issue.
Weakness Type
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-68525 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-68525
Want to know whenever a new CVE is published for Apache Tomcat? stack.watch will email you.
Affected Versions
Apache Software Foundation Apache Tomcat:- Version 11.0.0-M1, <= 11.0.24 is affected.
- Version 10.1.0-M1, <= 10.1.57 is affected.
- Version 9.0.0.M1, <= 9.0.120 is affected.
- Version 8.5.0, <= 8.5.100 is affected.
- Version 7.0.0, <= 7.0.109 is affected.
- Before 7.0.0 is unknown.