CVE-2021-24927 My Calendar < 3.2.18 - Subscriber+ Reflected Cross-Site Scripting

The My Calendar WordPress plugin before 3.2.18 does not sanitise and escape the callback parameter of the mcpostlookup AJAX action available to any authenticated user before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue...

CVE-2021-24927

The CVE describes a reflected XSS in the WordPress My Calendar plugin up to version 3.2.18. The vulnerability occurs in the mc_post_lookup AJAX action, where the callback parameter is not sanitized/escaped before echoing the response, and the action is accessible to any authenticated user. Affect...