CVE-2026-25854

Apache Tomcat: Occasionally open redirect

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.

Scores

Weaknesses (CWE)

• CWE-601

Advisories

• GHSA-9m3c-qcxr-9x87 — Apache Tomcat has an Open Redirect vulnerability

European references

• ENISA EUVD · EUVD-2026-21008
• GCVE · GCVE-0-2026-25854

CERT-FR advisories

• CERTFR-2026-AVI-1032 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0958 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0933 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0556 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0500 — Multiples vulnérabilités dans VMware Tanzu · cert.ssi.gouv.fr
• CERTFR-2026-AVI-0418 — Multiples vulnérabilités dans Apache Tomcat · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 9.0.1 < 9.0.116
• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 10.1.0 < 10.1.53
• cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* ≥ 11.0.0 < 11.0.20
• cpe:2.3:a:apache:tomcat:9.0.0:milestone23:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone24:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone25:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone26:*:*:*:*:*:*
• cpe:2.3:a:apache:tomcat:9.0.0:milestone27:*:*:*:*:*:*

Affected products

References

• https://lists.apache.org/thread/ghct3b6o74bp2vm7q875s1zh0dqrz3h0
• http://www.openwall.com/lists/oss-security/2026/04/09/21

Sources