Input validation vulnerability in WP Fastest Cache 1.1.2

The WP Fastest Cache plugin for WordPress has a security issue in versions up to 1.1.2. This means that someone who is not authorized could change the settings of the plugin if they got an administrator to do something like click on a link. This is because the plugin is missing a security measure called nonce validation on the wpfc_pause_cdn_integration_ajax_request_callback function.