CVE-2026-25854

Apache Tomcat: Occasionally open redirect

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

Apache Software Foundation · Apache Tomcat

CVSS v4.0 GitHub

6.9 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

CVSS v3.1 CNA

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS

0.53% chance of exploitation in the next 30 days, 43rd percentile

Published

2026-04-09

Updated

2026-04-10

Proof-of-concept exploits (1)

• gregk4sec/cve-2026-258540★ · 2026-04-12

Security advisories

• https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0
• http://www.openwall.com/lists/oss-security/2026/04/09/21
• advisories/GHSA-9m3c-qcxr-9x87

References

• CVE Record
• NVD entry

Related

• CVE-2025-24813
• CVE-2025-31651
• CVE-2025-46701
• CVE-2026-21962
• CVE-2026-29145