Member Management System v 4.0 XSS vuln.

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Vuln. discovered by : r0t
Date: 09 September 2010
vendor:http://www.expinion.net/Applications/MMS_overview.asp
affected versions:v 4.0 and other
versions also can be affected.
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Member Management System contains a flaw that allows a remote Cross-Site Scripting attacks.Input passed to the "REF_URL" parameter in "admin/index.asp" isn't properly sanitised before being returned to the user.
This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
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Solution:
Filter malicious characters and character sequences in a web proxy.
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