The Popups, Welcome Bar, Optins and Lead Generation Plugin WordPress plugin before 2.1.8 does not sanitize and escape some campaign parameters, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks
The Popups, Welcome Bar, Optins and Lead Generation Plugin WordPress plugin before 2.0.5 does not sanitise and escape the message_id parameter of the get_message_action_row AJAX action before outputting it back in an attribute, leading to a reflected Cross-Site Scripting issue
WordPress Popups, Welcome Bar, Optins and Lead Generation Plugin – Icegram (versions <= 2.0.2) vulnerable at "Headline" (&message_data[16][headline]) input.