CVE-2016-4431: Apache Struts

High severity, CVSS 7.5. EPSS: 9.8% chance of exploitation in the next 30 days.

Apache Struts 2 2.3.20 through 2.3.28.1 allows remote attackers to bypass intended access restrictions and conduct redirection attacks by leveraging a default method.

Affected products

• Apache Struts: version 2.3.20 only; version 2.3.20.1 only; version 2.3.20.3 only; version 2.3.24 only; version 2.3.24.1 only; version 2.3.24.3 only; …

Published 2016-07-04. Last modified 2026-06-17.