The Team Members WordPress plugin before 5.3.2 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 author role and above to perform Stored Cross-Site Scripting attacks.
https://wpscan.com/vulnerability/b2bac900-3d8f-406c-b03d-c8db156acc59/