Unauthenticated Attackers Can Bypass User Registration in LearnPress

Summary

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to bypass to user registration in versions up to, and including, 4.2.6.5. This is due to missing checks in the 'create_account' function in the checkout. This makes it possible for unauthenticated attackers to register as the default role on the site, even if registration is disabled.