Input validation vulnerability in occupancyplan 1.0.3.0

The occupancyplan plugin for WordPress is at risk of a security issue called Cross-Site Request Forgery. This problem affects all versions up to and including 1.0.3.0. It is caused by a function that does not properly check for a specific security code. This means that attackers who are not logged in can make changes to the plugin’s settings and insert harmful code into a website if they can trick the website administrator into doing something, like clicking on a link.