Input validation vulnerability in FAT Services Booking 5.5

The FAT Services Booking plugin for WordPress has a security issue in versions up to 5.5. This means that attackers who have contributor-level access or higher can potentially include and run any files they want on the server. This could allow them to bypass security measures, access private information, or even run malicious code. This vulnerability can occur when supposedly safe files, like images, are uploaded and included.