CVE-2016-4465: Apache Struts

Medium severity, CVSS 5.3. EPSS: 10.4% chance of exploitation in the next 30 days.

The URLValidator class in Apache Struts 2 2.3.20 through 2.3.28.1 and 2.5.x before 2.5.1 allows remote attackers to cause a denial of service via a null value for a URL field.

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.