CVE-2016-4438: Apache Struts

Critical severity, CVSS 9.8. EPSS: 16.7% chance of exploitation in the next 30 days.

The REST plugin in Apache Struts 2 2.3.19 through 2.3.28.1 allows remote attackers to execute arbitrary code via a crafted expression.

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.