What is CVE-2026-25854?

CVE-2026-25854 is a vulnerability in Apache Software Foundation Tomcat, classified under URL Redirection to Untrusted Site (Open Redirect). Published 2026-04-09.

Is CVE-2026-25854 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Open Redirect in Apache Software Foundation Tomcat

CVE-2026-25854

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…

Vulnerability class: Open Redirect

EPSS: 0.000 (10.2th percentile) — read the EPSS interpretation.

Affected products

Apache Software Foundation Tomcat — versions 11.0.0-M1, 10.1.0-M1, 9.0.0.M23

Weakness classification (CWE)

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

Public proof-of-concept exploits

gregk4sec/cve-2026-25854

References

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

Frequently asked questions

What is CVE-2026-25854?: CVE-2026-25854 is a vulnerability in Apache Software Foundation Tomcat, classified under URL Redirection to Untrusted Site (Open Redirect). Published 2026-04-09.
Is CVE-2026-25854 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.