ZeusCart 'search' Parameter Cross Site Scripting Vulnerability

Summary
The host is running ZeusCart 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 a vulnerable site. This may allow the attacker to steal cookie-based authentication credentials and to launch other attacks. 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 by improper validation of user-supplied input via the 'search' parameter in a 'search' action which allows attacker to execute arbitrary HTML and script code in a user's browser session.
Affected
ZeusCart Versions 3.0 and 2.3
References