WP Inventory Manager < 2.1.0.12 - Reflected XSS

The plugin does not sanitise and escape the message parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as administrators.

PoC

On a page where the [wpinventory] shortcode is embed, append the following payload: message= For example: https://example.com/inventory?message=