Input validation vulnerability in pressapps-accordion-faq 2.2.1

The Accordion FAQ plugin used for WordPress has a security issue in versions 2.2.1 and below. This vulnerability allows attackers who are logged in and have contributor-level access or higher to insert and run any type of file on the server. This means that they can use PHP code in those files to bypass security measures, access confidential information, or even execute code. This is especially dangerous if the plugin allows users to upload images or other seemingly harmless files.