Cross-site scripting (XSS) vulnerability in private.php for vBulletin 3.0.0 Beta 2 allows remote attackers to inject arbitrary web script and HTML via the "Preview Message" capability.

SQL injection vulnerability in (1) ttlast.php and (2) last10.php in vBulletin 3.0.x allows remote attackers to execute arbitrary SQL statements via the fsel parameter, as demonstrated using last.php.

misc.php for vBulletin 3.0.6 and earlier, when "Add Template Name in HTML Comments" is enabled, allows remote attackers to execute arbitrary PHP code via nested variables in the template parameter.

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.