GigPress < 2.3.28 - Contributor+ Stored XSS via Shortcode

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

Note: A Show needs to exist for the issue to be exploitable [gigpress_menu id=‘" onmouseover=“alert(/XSS/)”’]