The WP Font Awesome WordPress plugin before 1.7.9 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embedded, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.
https://wpscan.com/vulnerability/fd7aaf06-4be7-48d6-83a1-cd5cd6c3d9c2