iPages Flipbook For WordPress < 1.4.7 - Contributor+ Stored XSS

Proof of Concept

1. Create a new book item (with whatever role, even if it's an Administrator).

2. Connect to a user with a role as low as Contributor+ and create a new post.

3. Insert the following shortcode in a post: [ipages id='1' class='XSS" onmouseover="alert(1)']

4. Hover over the book inserted by going to the post, the alert triggers successfully.