WP Inventory Manager < 2.1.0.13 - Reflected Cross-Site Scripting

Proof of Concept

1. Go to WP Inventory > Inventory Items and create a new Inventory Item.
2. Create a page and add the [wpinventory] shortcode.
3. View the new page on the frontend, and click on the new Inventory Item.
3. Add the URL parameters: display=false&message=%3Cscript%3Ealert(/xss/)%3C/script%3E, and load the page.