Pecio CMS 'target' Parameter Cross Site Scripting Vulnerability

Summary
The host is running Pecio CMS and is prone to Cross-Site Scripting vulnerability.
Impact
Successful exploitation could allow an attacker to execute arbitrary HTML code in a user's browser session in the context of a vulnerable application. 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
Input passed via the 'target' parameter in 'search' action in index.php is not properly verified before it is returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in the context of a vulnerable site. This may allow an attacker to steal cookie-based authentication credentials and launch further attacks.
Affected
Pecio CMS v2.0.5 and prior.
References