PHPJabbers Car Park Booking System v3.0 is vulnerable to Multiple HTML Injection in the "name, plugin_sms_api_key, plugin_sms_country_code, title, plugin_sms_api_key, title" parameters.
The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.