Input validation vulnerability in Flipdish Ordering System 1.5.2

The Flipdish Ordering System add-on for WordPress has a security issue called Cross-Site Request Forgery. This affects all versions of the add-on up to 1.5.2. The problem is that the add-on does not properly check for a special code that helps prevent unauthorized changes. This means that someone without authorization can change the settings by tricking the person in charge of the website into doing something, like clicking on a link.