Submit #822784: raisulislamg4 student_management_system_by_php 1.0 SQL Injection

The login script constructs an SQL query by directly concatenating the user‑supplied `username` and the MD5 hash of the `password` into the query string:
```php
$name = $_POST['username'];
$pass = md5($_POST['password']);
$sql = "SELECT * FROM USERS WHERE USERNAME='".$name."' AND PASSWORD='".$pass."' ";
$result = mysqli_query($data, $sql);
```
No parameterisation, escaping, or input validation is applied. An attacker can inject arbitrary SQL logic into the username field to bypass the password check entirely. Upon successful injection, the server sets a valid session and redirects to the admin dashboard, giving the attacker full administrative privileges.

• Source: ⚠️ https://github.com/raisulislamg4/student_management_system_by_php/issues/2
• User: dede1 (UID 97915)
• Submission: 05/08/2026 06:17 (3 months ago)
• Moderation: 05/31/2026 09:59 (23 days later)
• Status: Accepted
• VulDB entry: 367504 [raisulislamg4 student_management_system_by_php up to 310d950e09013d5133c6b9210aff9444382d16d1 Login login_check.php Username sql injection]
• Points: 20