Post Shortcode <= 2.0.9 - Contributor+ Stored Cross-Site Scripting

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

[pcs template=‘" onmouseover=“alert(1)” style=“background:red;”’]