WordPress Booking System Plugin XSS Vulnerability

Summary
This host is running Wordpress Booking System plugin and is prone to cross site scripting vulnerability.
Impact
Successful exploitation will allow attacker to execute arbitrary HTML and script code in a user's browser session in the context of an affected site. Impact Level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
The flaw is caused due to an input validation error in the 'eid' parameter in '/wp-content/plugins/booking-system/events_facualty_list.php' script when processing user-supplied data.
Affected
WordPress Booking System Plugin
References