EPSS
Percentile
13.1%
Time Slots Booking Calendar 4.0 is vulnerable to Multiple HTML Injection issues via the name, plugin_sms_api_key, plugin_sms_country_code, calendar_id, title, country name, or customer_name parameter.
packetstormsecurity.com/files/176036
www.phpjabbers.com/time-slots-booking-calendar/