Hacking is not always doing SQL Injection. Sometimes, the easiest way to compromise a system is by simply uploading a file. 😼

If the web application fails to validate user uploads properly, it could lead to Remote Code Execution (RCE) — giving attackers a way to run arbitrary commands on the server.

This tutorial will walk you through the File Upload vulnerability in DVWA and how it can be escalated into RCE.

🗝️⚠️ Again, this is for educational purposes only. Never attempt these techniques on real websites without permission.

Why File Upload Vulnerability?

Uploading files seems harmless — images, documents, or resumes. But what if instead of a .jpg, an attacker uploads a .php script?

If the web app stores it in a public directory and executes it, the attacker essentially gains a backdoor into the system.

That’s where the danger lies.

Getting Started with DVWA