CVE-2011-4898

DISPUTED wp-admin/setup-config.php in the installation component in
WordPress 3.3.1 and earlier generates different error messages for requests
lacking a dbname parameter depending on whether the MySQL credentials are
valid, which makes it easier for remote attackers to conduct brute-force
attacks via a series of requests with different uname and pwd parameters.
NOTE: the vendor disputes the significance of this issue; also, it is
unclear whether providing intentionally vague error messages during
installation would be reasonable from a usability perspective.