Youtube Channel Gallery <= 2.4 - 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

[Youtube_Channel_Gallery key='invalid' user='" onmouseover="alert(/XSS/)" style="background:red;"']