The Ad Inserter for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 2.7.30 via the ai-debug-processing-fe URL parameter. This can allow unauthenticated attackers to extract sensitive data including installed plugins (present and active), active theme, various plugin settings, WordPress version, as well as some server settings such as memory limit, installation paths.

The Ad Inserter WordPress plugin before 2.7.27 unserializes user input provided via the settings, which could allow high privilege users such as admin to perform PHP Object Injection when a suitable gadget is present

The Ad Inserter Free and Pro WordPress plugins before 2.7.12 do not sanitise and escape the REQUESTURI before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting in browsers which do not encode characters

The Ad Inserter WordPress plugin before 2.7.10, Ad Inserter Pro WordPress plugin before 2.7.10 do not sanitise and escape the htmlelementselection parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting

The ad-inserter plugin before 1.5.3 for WordPress has CSRF with resultant XSS via wp-admin/options-general.php?page=ad-inserter.php.

The ad-inserter plugin before 2.4.22 for WordPress has remote code execution.

The ad-inserter plugin before 2.4.20 for WordPress has path traversal.