Input validation vulnerability in Waitlist Woocommerce ( Back in stock notifier ) 2.5.2

The Waitlist Woocommerce (Back in stock notifier) plugin for WordPress has a security issue in versions up to 2.5.2. This means that if an unauthenticated attacker can somehow trick an administrator into clicking on a link, they could reset the plugin settings without authorization. This is because the plugin does not properly validate a type of security code (called a nonce) when the ‘reset_settings’ function is used.