The Ultimate Coming Soon & Maintenance plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'ucsm_update_template_name_lite' function in all versions up to, and including, 1.0.9. This makes it possible for authenticated attackers, with Subscriber-level access and above, to change the name of the plugin's templates.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.