PBBoard contains a flaw that allows a remote cross-site scripting (XSS) attack. This flaw exists because the application does not validate the 'PowerBB_username' cookie upon submission to the engine/Engine.class.php script. This may allow a user to create a specially crafted request that would execute arbitrary script code in a user's browser within the trust relationship between their browser and the server.
Remote / Network Access
Loss of Integrity
OSVDB is not aware of a solution for this vulnerability.