The Simple Ecommerce Shopping Cart Plugin- Sell products through Paypal plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on the 'save_settings', 'export_csv', and 'simpleecommcart-action' actions in all versions up to, and including, 3.1.2. This makes it possible for authenticated attackers, with subscriber-level access and above, to update the plugins settings and retrieve order and log data (which is also accessible to unauthenticated users).
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.