Knight cms injection, and the background to get shell-vulnerability warning-the black bar safety net

0x1 arbitrary user login 0x2 blind 0x3 background holding shell 0x4 random function problem Detailed description: 0x1 arbitrary user login user/login.php elseifempty$SESSION'uid' || empty$SESSION'username' || empty$SESSION'utype' && $COOKIE'QS''username' && $COOKIE'QS''password' && $COOKIE'QS''ui...