rgod has discovered some vulnerabilities in PHPPageProtect, which can be exploited by malicious people to conduct cross-site scripting attacks.
Input passed to the "username" parameter in "admin.php" and "login.php" isn't properly sanitised before being returned to users. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of a vulnerable site.
Successful exploitation requires that "register_globals" is enabled.
The vulnerabilities have been confirmed in version 1.0b (also called 1.0.0a). Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised.
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