Even if $user_id contains 1; DROP TABLE users; , the database sees it as a , not as executable SQL code.
The attacker visits the first URL. If the page responds with a form or a confirmation message like “Record updated,” they note that the script performs a database write operation. They then modify the parameters manually:
Google returns a list of URLs such as:
cover updating resources like product images via web services [15]. inurl php id1 upd
Using UNION based SQL injection to steal sensitive data.
// Vulnerable code example $id = $_GET['id1']; $query = "SELECT * FROM products WHERE status = 'upd' AND user_id = $id"; $result = mysqli_query($conn, $query);
Are you looking to a specific PHP application, or do you need a more technical breakdown of sanitizing SQL update commands? Even if $user_id contains 1; DROP TABLE users;
Requesting: https://target.com/page.php?id1=1 AND 1=1 If the page loads normally, it is vulnerable. Requesting: https://target.com/page.php?id1=1 AND 1=2 If the page returns a 404 error, a broken layout, or “No results found,” the database is interpreting the input as code.
A security researcher (white hat) used the same dork during a responsible disclosure program. They found https://university.edu/grade_update.php?id1=2024&upd=midterm . By injecting id1=2024 OR 1=1 , they were able to change grades for all students. The university fixed the issue within 24 hours after receiving the report, but the vulnerability had existed for over two years.
The inurl operator is used by search engines to find specific keywords within URLs. When combined with php?id=1&upd , it suggests you're searching for PHP scripts that have a specific parameter id set to 1 and another parameter upd , possibly looking for potential vulnerabilities or for testing purposes. They then modify the parameters manually: Google returns
// Vulnerable Code Example $id = $_GET['id1']; $query = "UPDATE users SET status = '$id' WHERE id = 1"; Use code with caution.
When combined, these terms help find websites that expose database communication directly through the URL. Why Attackers Search for This Footprint