Materialis Companion < 1.3.40 - 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.

Required theme: https://wordpress.org/themes/materialis

[materialis_latest_news item_class='" onmouseover="alert(1)"']