The WP User Profile Avatar WordPress plugin through 1.0.1 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/ae8e225a-5273-4db1-9c72-060304cca658/