The wcfm_ajax_controller AJAX action of the WCFM Marketplace WordPress plugin before 3.4.12, available to unauthenticated and authenticated user, does not properly sanitise multiple parameters before using them in SQL statements, leading to SQL injections.
View the template here CVE-2021-24849.yaml
References:
https://wpscan.com/vulnerability/763c08a0-4b2b-4487-b91c-be6cc2b9322e/