Cross-site scripting (XSS) vulnerability in forum/admin.php for Invision Power Board (IPB) 2.1.6 and earlier allows remote attackers to inject arbitrary web script or HTML as the administrator via the phpinfo parameter.

Unspecified vulnerability in the subscriptions manager in Invision Power Board (IPB or IP.Board) 2.3.1 before 20070912 allows remote authenticated users to change the member ID and reduce the privilege level of arbitrary users via a crafted payment form, related to (1) classgw2checkout.php, (2) classgwauthorizenet.php, (3) classgwnochex.php, (4) classgwpaypal.php, and (5) classgwsafshop.php in sources/classes/paymentgateways/.

Cross-site scripting (XSS) vulnerability in Invision Power Board 2.3.1 and earlier allows remote attackers to inject arbitrary web script or HTML via an IFRAME tag in the signature.

Cross-site scripting (XSS) vulnerability in ipskernel/classajax.php in Invision Power Board (IPB or IP.Board) 2.3.1 up to 20070912 allows remote attackers to inject arbitrary web script or HTML into user profile fields via unspecified vectors related to character sets other than iso-8859-1 or utf-8.