CVE-2026-25854

Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.

Score

CVSS 3.1 6.1 Medium

Status

Analyzed - security@apache.org

Published

2026-04-09

Last modified

2026-10-26

Weaknesses

CWE-601

Affected products

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

References

• https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0
• http://www.openwall.com/lists/oss-security/2026/04/09/21