重要更新：Youbbs发现SQL注入漏洞

存在问题的版本：
v1.04，v2.0

v1.04把：

$cur_user = null;
$cur_uid = $_COOKIE['cur_uid'];
$cur_uname = $_COOKIE['cur_uname'];
$cur_ucode = $_COOKIE['cur_ucode'];

替换为：

$cur_user = null;
$cur_uid = isset($_COOKIE['cur_uid']) ? intval($_COOKIE['cur_uid']) : '';
$cur_uname = isset($_COOKIE['cur_uname']) ? $_COOKIE['cur_uname'] : '';
$cur_ucode = isset($_COOKIE['cur_ucode']) ? $_COOKIE['cur_ucode'] : '';

v2.0把：

$cur_user = null;
$cur_uid = isset($_COOKIE['cur_uid']) ? $_COOKIE['cur_uid'] : '';
$cur_uname = isset($_COOKIE['cur_uname']) ? $_COOKIE['cur_uname'] : '';
$cur_ucode = isset($_COOKIE['cur_ucode']) ? $_COOKIE['cur_ucode'] : '';

替换为：

$cur_user = null;
$cur_uid = isset($_COOKIE['cur_uid']) ? intval($_COOKIE['cur_uid']) : '';
$cur_uname = isset($_COOKIE['cur_uname']) ? $_COOKIE['cur_uname'] : '';
$cur_ucode = isset($_COOKIE['cur_ucode']) ? $_COOKIE['cur_ucode'] : '';

漏洞截图：