| Title | girishsaraf Online-Appointment-Booking-System f427b4757128ca253d33d0cc4e87bbb9c999a4d5 SQL Injection |
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| Description | The affected components are the root `book.php` booking handler and `cancelbookingpatient.php` cancellation handler. In `book.php`, the `Doctor` POST value is concatenated into the availability check and the INSERT:
```php
$did=$_POST['Doctor'];
$query ="SELECT * FROM doctor_availability WHERE DID = '" .$did. "' AND CID='".$cid."'";
$sql = "INSERT INTO book (...) VALUES (...'$did'...)";
```
In `cancelbookingpatient.php`, the `appointment` POST value is concatenated into an UPDATE:
```php
$timestamp=$_POST['appointment'];
$updatequery="update book set Status='Cancelled by Patient' where username='$username' and timestamp= '$timestamp'";
```
A logged-in patient can inject `1' AND SLEEP(2) -- -` (or `x' OR SLEEP(2) -- -`) to trigger measurable delays, confirming SQL injection in authenticated flows. |
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| Source | ⚠️ https://github.com/girishsaraf/Online-Appointment-Booking-System/issues/10 |
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| User | jiqinwang (UID 101291) |
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| Submission | 09/16/2026 15:49 (20 days ago) |
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| Moderation | 10/05/2026 16:58 (19 days later) |
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| Status | Accepted |
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| VulDB entry | 413618 [girishsaraf Online-Appointment-Booking-System up to f427b4757128ca253d33d0cc4e87bbb9c999a4d5 Booking book.php Doctor/appointment sql injection] |
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| Points | 20 |
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