Input validation vulnerability in Classified Listing – Classified ads & Business Directory Plugin 3.1.16

The Classified Listing plugin for WordPress has a security issue that allows attackers to access and run any files on the server. This can be done by people with contributor-level access or higher, which means they have some level of permission to use the plugin. This vulnerability can be used to get around security measures, get private information, or run code even if the file seems harmless.