If you have ever looked at the address bar of an online store, you have seen a URL like this: https://www.example.com/product.php?id=1
Modify your products table:
$id = $_GET['id']; $sql = "SELECT * FROM products WHERE id = $id"; php id 1 shopping
A 15-year-old with a free SQL injection tool can empty your entire orders table, steal your customer credit card hashes, and deface your website. 2. Insecure Direct Object References (IDOR) Even if you fix SQL injection (using prepared statements), the "php id 1 shopping" pattern creates an IDOR vulnerability. If you have ever looked at the address
The prepare() method separates the SQL logic from the data. Even if the user sends 1; DROP TABLE , the database treats it as a string value for :id , not as SQL code. Step 2: Fix IDOR with Session-Based Authorization Do not trust the user to tell you which account or order to view. Instead, derive the ID from the session. The prepare() method separates the SQL logic from the data
ALTER TABLE products ADD COLUMN public_id CHAR(36) NOT NULL UNIQUE; UPDATE products SET public_id = UUID(); Now your URL becomes: product.php?id=3f7e8a9b-2c4d-4e5f-8a9b-0c1d2e3f4a5a
product.php?slug=red-cotton-t-shirt