Cross-site scripting (XSS) vulnerability in Invision Power Board (IPB) 2.1.5 and earlier before 20060308 allows remote attackers to inject arbitrary web script or HTML via a Private Message (PM) in certain circumstances.
Cross-site scripting (XSS) vulnerability in index.php for Invision Power Board 1.3 final allows remote attackers to execute arbitrary script as other users via the (1) c, (2) f, (3) showtopic, (4) showuser, or (5) username parameters.
ipchat.php in Invision Power Board 1.1.1 allows remote attackers to execute arbitrary PHP code, if register_globals is enabled, by modifying the root_path parameter to reference a URL on a remote web server that contains the code.