The WP Shortcodes Plugin — Shortcodes Ultimate WordPress plugin before 7.1.0 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/bc273e75-7faf-4eaf-8ebd-efc5d6e9261f/