The Page-list WordPress plugin before 5.3 does not validate and escape some of its shortcode attributes before outputting them back in the page, which could allow users with a role as low as contributor to perform Stored Cross-Site Scripting attacks which could be used against high privilege users such as admins.
https://wpscan.com/vulnerability/685b068e-0727-45fb-bd8c-66bb1dc3a8e7