The Easy Social Box / Page Plugin WordPress plugin through 4.1.2 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
https://wpscan.com/vulnerability/d2cc0ab2-9bfd-4a09-ac31-bd90e6da12db