Gruyere Learn Web Application Exploits Defenses Top _verified_

Inputting ' OR '1'='1 into a login field to force the backend logic to evaluate to true, logging the attacker in as the first user in the database. The Defense

XSS vulnerabilities occur when an application includes untrusted data in a web page without proper validation or escaping. gruyere learn web application exploits defenses top

Set the SameSite attribute on cookies to Strict or Lax . This prevents browsers from sending cookies along with cross-site requests. Inputting ' OR '1'='1 into a login field

Attempt the exploit again. Instead of running JavaScript, you literally see the text 35<script>fetch... displayed harmlessly on the page. This prevents browsers from sending cookies along with

Gruyere features actions executed via simple GET requests, such as deleting a snippet via a URL like http://localhost:8008/delete?id=1 . An attacker can embed this URL inside an image tag on an external malicious website:

Unlike reading a textbook, Gruyere forces you to find the bugs yourself [1].