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Credits ============ Discovered by: David Vieira-Kurz http://www.majorsecurity.info/penetrationstest.php Affected Products: ---------------------------- Invision Power Board 3.0.5 and prior Introduction ============ Invision Power Board is a widely used forums script. David Vieira-Kurz has reported a vulnerability in IP.Board, which can be exploited by malicious users to conduct script insertion attacks. Input passed to the calendar application is not properly sanitised before being displayed to the user. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed. Successful exploitation requires "Add / Edit" permissions to the "Calendar" application. The vulnerability is reported in version 3.0.5. Other versions may also be affected.