Submit #955080: AdithyaYelloju Restaurant-Management-System 7f0e7e84255e8fcfd488e83f8f91451bbbff6b9c SQL Injection

The affected components are `User/cancel.php` and `User/cancel_t.php`, two endpoints used to cancel an order. Both endpoints take the `id` GET parameter and concatenate it directly into a SQL `DELETE` statement without any escaping or session/ownership check:

```php
// User/cancel.php
$id=$_GET["id"];
mysqli_query($conn,"delete from order_list where id='$id'");
```

```php
// User/cancel_t.php
$id=$_GET["id"];
mysqli_query($conn,"delete from t_order where id='$id'");
```

There is no `session_start()`, no `$_SESSION['user']` check, no anti-CSRF token, and no record-ownership verification. An attacker can close the quote and append `OR id>0 -- ` to mass-delete every row in the `order_list` or `t_order` tables. Verified in the lab against `User/cancel_t.php` (deleted all `t_order` rows in one request).

• Source: ⚠️ https://github.com/AdithyaYelloju/Restaurant-Management-System/issues/7
• User: 100001001X (UID 100909)
• Submission: 09/01/2026 13:28 (29 days ago)
• Moderation: 09/30/2026 10:09 (29 days later)
• Status: Accepted
• VulDB entry: 411924 [AdithyaYelloju Restaurant-Management-System up to 7f0e7e84255e8fcfd488e83f8f91451bbbff6b9c Order Cancellation User/cancel.php mysqli_query id sql injection]
• Points: 20