The List category posts WordPress plugin before 0.90.3 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/6caa4e5d-8112-4d00-8e97-b41df611a071/