The Event List plugin for WordPress is vulnerable to privilege escalation in all versions up to, and including, 2.0.4. This is due to the plugin not properly validating a users capabilities prior to updating their profile in the el_update_profile() function. This makes it possible for authenticated attackers, with Subscriber-level access and above, to change their capabilities to those of an administrator.
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.