The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the time parameter before using it in a SQL statement in the mec_load_single_page AJAX action, available to unauthenticated users, leading to an unauthenticated SQL injection issue
https://wpscan.com/vulnerability/09871847-1d6a-4dfe-8a8c-f2f53ff87445
https://github.com/Hacker5preme/Exploits/tree/main/Wordpress/CVE-2021-24946
http://packetstormsecurity.com/files/165742/WordPress-Modern-Events-Calendar-6.1-SQL-Injection.html