Cross-site scripting (XSS) vulnerability in Jelsoft vBulletin allows remote attackers to inject arbitrary web script or HTML via an SWF file that uses ActionScript to trigger execution of JavaScript.

Cross-site scripting (XSS) vulnerability in member.php in vBulletin 3.5.x allows remote attackers to inject arbitrary web script or HTML via the u parameter. NOTE: the vendor has disputed this report, stating that they have been unable to replicate the issue and that "the userid parameter is run through our filtering system as an unsigned integer.

PHP remote file inclusion vulnerability in VBulletin 3.5.1, 3.5.2, and 3.5.4 allows remote attackers to execute arbitrary code via a URL in the systempath parameter to (1) ImpExModule.php, (2) ImpExController.php, and (3) ImpExDisplay.php.

Cross-site scripting (XSS) vulnerability in the editavatar page in vBulletin 3.5.1 allows remote attackers to inject arbitrary web script or HTML via a URL in the remote avatar url field, in which the URL generates a parsing error, and possibly requiring a trailing extension such as .jpg.