The Digital License Manager plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of remove_query_arg() function without appropriate escaping on the URL in all versions up to, and including, 1.7.3. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.