CVE-2016-4465

Name of the Vulnerable Software and Affected Versions Apache Struts versions 2.3.20 through 2.3.28.1 Apache Struts versions 2.5.x before 2.5.13

Description The issue exists due to insufficient input validation in the URLValidator class of Apache Struts. This allows a remote attacker to cause a denial of service by providing a null value for a URL field.

Recommendations For Apache Struts versions 2.3.20 through 2.3.28.1, update to a version outside of this range to resolve the issue. For Apache Struts versions 2.5.x before 2.5.13, update to version 2.5.13 or later to resolve the issue. As a temporary workaround, consider restricting the input for URL fields to prevent null values from being processed by the URLValidator class.