A vulnerability has been identified in myPHP Guestbook, which could be exploited by attackers to execute arbitrary scripting code. This flaw is due to an input validation error in the "index.php" script that does not validate the "lang" parameter, which could be exploited by attackers to cause arbitrary scripting code to be executed by the user's browser in the security context of an affected Web site.
Credits
Vulnerability reported by x0r_1
ChangeLog
2006-06-13 : Initial release
2006-07-05 : Updated Solution
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