OneClick Chat to Order < 1.0.4.2 - Contributor+ Stored XSS via Shortcode

The plugin does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.

PoC

1. Install the WooCommerce Plugin. 2. Exploit: [waorder message=‘" onmouseover=“alert(1)”’]