The LifterLMS – WordPress LMS Plugin for eLearning plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'process_review' function in all versions up to, and including, 7.5.1. This makes it possible for unauthenticated attackers to publish an unrestricted number of reviews on the site.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.