CVE-2026-25854
Medium
Description
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.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Apache Tomcat
PublishedApr 9, 2026
First seenApr 9, 2026
Weakness typeCWE-601Open redirect
How to fix
Update
- apache tomcat9.0.116, 10.1.53, 11.0.20 or later
- org.apache.tomcat:tomcat-catalina9.0.116, 10.1.53, 11.0.20 or later
- org.apache.tomcat:tomcat9.0.116, 10.1.53, 11.0.20 or later
- org.apache.tomcat.embed:tomcat-embed-core9.0.116, 10.1.53, 11.0.20 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache tomcat | 9.0.1 ≤ v < 9.0.116, 10.1.0 ≤ v < 10.1.53, 11.0.0 ≤ v < 11.0.20, 9.0.0 | 9.0.116, 10.1.53, 11.0.20 |
| org.apache.tomcat:tomcat-catalinaMaven | 8.5.30 ≤ v < 9.0.116, 10.1.0-M1 ≤ v < 10.1.53, 11.0.0-M1 ≤ v < 11.0.20 | 9.0.116, 10.1.53, 11.0.20 |
| org.apache.tomcat:tomcatMaven | 8.5.30 ≤ v < 9.0.116, 10.1.0-M1 ≤ v < 10.1.53, 11.0.0-M1 ≤ v < 11.0.20 | 9.0.116, 10.1.53, 11.0.20 |
| org.apache.tomcat.embed:tomcat-embed-coreMaven | 8.5.30 ≤ v < 9.0.116, 10.1.0-M1 ≤ v < 10.1.53, 11.0.0-M1 ≤ v < 11.0.20 | 9.0.116, 10.1.53, 11.0.20 |
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