register.php in The Address Book 1.04e allows remote attackers to bypass the "Allow User Self-Registration" setting and create arbitrary users by setting the mode parameter to "confirm".Referenceshttp://secunia.com/secunia_research/2006-76/advisory/http://osvdb.org/32561http://www.securityfocus.com/bid/21870https://exchange.xforce.ibmcloud.com/vulnerabilities/31249http://secunia.com/advisories/21694
