WP Tiles <= 1.1.2 - Contributor+ Stored XSS

The plugin does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks

PoC

[wp-tiles extra_classes=‘" onmouseover=“alert(/XSS/)”’]