The Go Pricing - WordPress Responsive Pricing Tables plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'process_postdata' function in versions up to, and including, 3.3.19. This makes it possible for authenticated attackers with a role that the administrator previously granted access to the plugin to modify access to the plugin when it should only be the administrator's privilege.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.