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.