calendar.php in vBulletin before 2.2.0 allows remote attackers to execute arbitrary commands via shell metacharacters in the command parameter.

Cross-site scripting (XSS) vulnerability in memberlist.php in Jelsoft vBulletin 2.0 rc 2 through 2.2.4 allows remote attackers to steal authentication credentials by injecting script into $letterbits.

Cross-site scripting (XSS) vulnerability in Jelsoft vBulletin 2.2.0 allows remote attackers to execute arbitrary script as other users by injecting script into a bulletin board message.

Cross-site scripting (XSS) vulnerability in global.php in Jelsoft vBulletin 2.0.0 through 2.2.8 allows remote attackers to inject arbitrary web script or HTML via the (1) $scriptpath or (2) $url variables.

member2.php in vBulletin 2.2.9 and earlier does not properly restrict the $perpage variable to be an integer, which causes an error message to be reflected back to the user without quoting, which facilitates cross-site scripting (XSS) and possibly other attacks.

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.

Cross-site scripting (XSS) vulnerability in register.php for vBulletin 3.0 Beta 2 allows remote attackers to inject arbitrary HTML or web script via optional fields such as (1) "Interests-Hobbies", (2) "Biography", or (3) "Occupation."

SQL injection vulnerability in calendar.php for vBulletin Forum 2.3.x before 2.3.4 allows remote attackers to steal sensitive information via the eventid parameter.

NOTE: this issue has been disputed by the vendor. Cross-site scripting (XSS) vulnerability in register.php for unknown versions of vBulletin allows remote attackers to inject arbitrary HTML or web script via the reg_site (or possibly regsite) parameter. NOTE: the vendor has disputed this issue, saying "There is no hidden field called 'reg_site', nor any $reg_site variable anywhere in the vBulletin 2 or vBulletin 3 source code or templates, nor has it ever existed. We can only assume that this vulnerability was found in a site running code modified from that supplied by Jelsoft.

Cross-site scripting (XSS) vulnerability in (1) newreply.php or (2) newthread.php in vBulletin 3.0.1 allows remote attackers to inject arbitrary HTML or script as other users via the Edit-panel.

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.

Multiple cross-site scripting (XSS) vulnerabilities in Jelsoft vBulletin 2.0 beta 3 through 3.0 can4 allows remote attackers to inject arbitrary web script or HTML via the (1) page parameter to showthread.php or (2) order parameter to forumdisplay.php.

Cross-site scripting (XSS) vulnerability in Jelsoft vBulletin before 3.0 allows remote attackers to inject arbitrary web script or HTML via the what parameter to memberlist.php.

Cross-site scripting (XSS) vulnerability in search.php for Jelsoft vBulletin 3.0.0 RC4 allows remote attackers to inject arbitrary web script or HTML via the query parameter.

Cross-site scripting (XSS) vulnerability in index.php in Jelsoft vBulletin allows remote attackers to spoof parts of a website via the loc parameter.

SQL injection vulnerability in the Authorize.net callback code (subscriptions/authorize.php) in Jelsoft vBulletin 3.0 through 3.0.3 allows remote attackers to execute arbitrary SQL statements via the x_invoice_num parameter. NOTE: this issue might be related to CVE-2006-4267.

Direct code injection vulnerability in forumdisplay.php in vBulletin 3.0 through 3.0.4, when showforumusers is enabled, allows remote attackers to execute inject arbitrary PHP commands via the comma parameter.

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.

Multiple SQL injection vulnerabilities in vBulletin before 3.0.9 allow remote attackers to execute arbitrary SQL commands via the (1) request parameter to joinrequests.php, (2) limitnumber or (3) limitstart to user.php, (4) usertitle.php, or (5) usertools.php.

Multiple cross-site scripting (XSS) vulnerabilities in vBulletin before 3.0.9 allow remote attackers to inject arbitrary web script or HTML via the (1) group parameter to css.php, (2) redirect parameter to index.php, (3) email parameter to user.php, (4) goto parameter to language.php, (5) orderby parameter to modlog.php, and the (6) hex, (7) rgb, or (8) expandset parameter to template.php.