PHP remote file inclusion vulnerability in install/upgrade_301.php in Jelsoft vBulletin 3.5.4 allows remote attackers to execute arbitrary PHP code via a URL in the step parameter. NOTE: the vendor has disputed this vulnerability, saying "The default vBulletin requires authentication prior to the usage of the upgrade system.

Jelsoft vBulletin 3.5.4 allows remote attackers to register multiple arbitrary users and cause a denial of service (resource consumption) via a large number of requests to register.php. NOTE: the vendor has disputed this vulnerability, stating "If you have the CAPTCHA enabled then the registrations wont even go through. ... if you are talking about the flood being allowed in the first place then surely this is something that should be handled at the server level.

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.

SQL injection vulnerability in VBulletin 3.0.10 allows remote attackers to execute arbitrary SQL commands via the featureid parameter.

Jelsoft vBulletin accepts uploads of Cascading Style Sheets (CSS) and processes them in a way that allows remote authenticated administrators to gain shell access by uploading a CSS file that contains PHP code, then selecting the file via the style chooser, which causes the PHP code to be executed. NOTE: the vendor was unable to reproduce this issue in 3.5.x. NOTE: this issue might be due to direct static code injection.

SQL injection vulnerability in calendar.php in vBulletin 3.0.x allows remote attackers to execute arbitrary SQL commands via the eventid parameter. NOTE: the affected version has been disputed by the vendor. It appears that this is the same issue as CVE-2004-0036, which was fixed in 2.3.4.

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 vbugs.php in Dark_Wizard vBug Tracker 3.5.1 and earlier allows remote attackers to inject arbitrary web script or HTML via the sortorder parameter.

PHP remote file inclusion vulnerability in impex/ImpExData.php in vBulletin ImpEx module 1.74, when register_globals is disabled, allows remote attackers to include arbitrary files via the systempath parameter.

Cross-site scripting (XSS) vulnerability in vBulletin 3.0.12 and 3.5.3 allows remote attackers to inject arbitrary web script or HTML via the email field, which is injected in profile.php but not sanitized in sendmsg.php.