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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.

PUBLISHED Reserved 2026-02-06 | Published 2026-04-09 | Updated 2026-04-10 | Assigner apache

Problem types

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Product status

Default status
unaffected

11.0.0-M1 (semver)
affected

10.1.0-M1 (semver)
affected

9.0.0.M23 (semver)
affected

8.5.30 (semver)
affected

Any version
unaffected

Credits

gregk4sec (https://github.com/gregk4sec) finder

References

www.openwall.com/lists/oss-security/2026/04/09/21

lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0 vendor-advisory

cve.org (CVE-2026-25854)

nvd.nist.gov (CVE-2026-25854)

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