SQL injection vulnerability in includes/api/4/breadcrumbs_create.php in vBulletin 4.2.2, 4.2.1, 4.2.0 PL2, and earlier allows remote authenticated users to execute arbitrary SQL commands via the conceptid argument in an xmlrpc API request.
https://github.com/tintinweb/pub/tree/master/pocs/cve-2014-2022
https://euvd.enisa.europa.eu/vulnerability/EUVD-2014-2074
http://www.securitytracker.com/id/1031001
http://www.securityfocus.com/bid/70417
http://seclists.org/fulldisclosure/2014/Oct/56
http://packetstormsecurity.com/files/128696/vBulletin-4.x-SQL-Injection.html