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.
Affected products
apache: tomcat
References2
- lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0 Mailing ListVendor Advisory
- www.openwall.com/lists/oss-security/2026/04/09/21 Mailing ListThird Party Advisory
Metrics
- CVSS 3.1
-
6.1
MEDIUM
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS — exploit probability
- 1% percentile: 48 · as of 12 November 2026
- CWE
- CWE-601
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