CVE-2026-25854: Apache Tomcat

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Apache Tomcat: from 9.0.1, before 9.0.116 (fixed in 9.0.116); from 10.1.0, before 10.1.53 (fixed in 10.1.53); from 11.0.0, before 11.0.20 (fixed in 11.0.20); version 9.0.0 only

Published 2026-04-09. Last modified 2026-06-17.