The WOOCS WordPress plugin before 1.3.9.4 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/c7d12fd4-7346-4727-9f6c-7e7e5524a932
https://wpscan.com/vulnerability/860b882b-983c-44b5-8c09-b6890df8a0da