name:WP Popup Builder Popup Forms and Marketing Lead Generation <= 1.3.5 - Arbitrary Shortcode Execution
author:s4e-io
severity:high
description:|
The The WP Popup Builder Popup Forms and Marketing Lead Generation plugin for WordPress is vulnerable to arbitrary shortcode execution via the wp_ajax_nopriv_shortcode_Api_Add AJAX action in all versions up to, and including, 1.3.5. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.