CVE-2026-68525

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.

Score

CVSS 3.1 9.1 Critical

Status

Analyzed - security@apache.org

Published

2026-08-25

Last modified

2026-08-26

Weaknesses

CWE-863

Affected products

• Tomcat (Apache)
• Apache Tomcat (Apache Software Foundation)

References

• https://lists.apache.org/thread/x1y2lfsgzxwzc456f8954vbvgn03zhd7
• http://www.openwall.com/lists/oss-security/2026/08/26/7