CVE-2016-4436: Apache Struts

Critical severity, CVSS 9.8. EPSS: 6.6% chance of exploitation in the next 30 days.

Apache Struts 2 before 2.3.29 and 2.5.x before 2.5.1 allow attackers to have unspecified impact via vectors related to improper action name clean up.

Affected products

• Apache Struts: version 2.0.0 only; version 2.0.1 only; version 2.0.2 only; version 2.0.3 only; version 2.0.4 only; version 2.0.5 only; …

Published 2016-10-03. Last modified 2026-06-17.