source: https://www.securityfocus.com/bid/8934/info It has been reported that LedForums is prone to a HTML injection vulnerability that may allow an attacker to execute HTML code in a user's browser. The issue is reported to be present in the 'top_message' and 'topic' fields. This problem is due to insufficient sanitization of user-supplied input. Successful exploitation of this vulnerability may allow an attacker to steal cookie-based authentication credentials. Other attacks are also possible. LedForums Beta 1 has been reported to be vulnerable to this issue. http://www.example.com/~path/index.php?top_message=<script>alert(document.cookie)</script> http://www.example.com/~path/index.php?top_message=<h1>OWNED?%20*g*</h1> <script>window.location='http://www.example.org'</script>