The forgotten mail interface in WordPress and WordPress MU before 2.8.1 exhibits different behavior for a password request depending on whether the user account exists, which allows remote attackers to enumerate valid usernames. NOTE: the vendor reportedly disputes the significance of this issue, indicating that the behavior exists for โuser convenience.โ
corelabs.coresecurity.com/index.php?action=view&type=advisory&name=WordPress_Privileges_Unchecked
securitytracker.com/id?1022528
www.exploit-db.com/exploits/9110
www.osvdb.org/55714
www.securityfocus.com/archive/1/504795/100/0/threaded
www.securityfocus.com/bid/35581
www.vupen.com/english/advisories/2009/1833
www.redhat.com/archives/fedora-package-announce/2009-August/msg00597.html
www.redhat.com/archives/fedora-package-announce/2009-August/msg00608.html
www.redhat.com/archives/fedora-package-announce/2009-July/msg00632.html
www.redhat.com/archives/fedora-package-announce/2009-July/msg00676.html