The WordPress Multisite Content Copier/Updater WordPress plugin before 2.1.0 does not sanitise and escape the wmcc_content_type, wmcc_source_blog and wmcc_record_per_page parameters before outputting them back in attributes, leading to Reflected Cross-Site Scripting issues
https://wpscan.com/vulnerability/c92eb2bf-0a5d-40b9-b0be-1820e7b9bebb