Like XSS and open redirects, insecure direct object references (IDORs) are a type of bug present in almost every web application. They happen when the application grants direct access to a resource based on the user’s request, without validation.
In this chapter, we’ll explore how these work. Then we’ll dive into how applications prevent IDORs, and how you can bypass those common protection mechanisms.
Mechanisms
Despite its long and intimidating name, IDOR is easy to understand; it’s essentially a missing access control. IDORs happen when users can access resources that do not belong to them by directly ...
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