Moanshop.7z

An attacker sends a JSON payload containing the __proto__ key. This allows them to inject properties into the global object prototype, effectively changing the behavior of the entire application. 3. From Pollution to Remote Code Execution (RCE)

Crafts a malicious POST request to pollute the server’s environment. moanshop.7z

The application uses a vulnerable library (like lodash or merge-deep ) to combine user input into a configuration object. An attacker sends a JSON payload containing the

The .7z file contains the application's backend logic, often written in or Python (Flask/Django) . By analyzing the code, researchers look for: From Pollution to Remote Code Execution (RCE) Crafts

Triggers a system command (e.g., cat /flag.txt ) to read the secret flag.

The file is associated with a widely known and high-stakes Capture The Flag (CTF) challenge, typically categorized under Web Exploitation or Reverse Engineering .