CVE-2009-2335
WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt depending on whether the user account exists, which allows remote attackers to enum…
Published: 2009-07-10 · CVSS: Unscored
WordPress and WordPress MU before 2.8.1 exhibit different behavior for a failed login attempt 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 "user convenience."
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7