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)
Once the attacker can "pollute" the global object, they target specific application behaviors to gain control: moanshop.7z
Injecting an isAdmin: true property into the prototype so that every user session is treated as an administrator. An attacker sends a JSON payload containing the
The file is associated with a widely known and high-stakes Capture The Flag (CTF) challenge, typically categorized under Web Exploitation or Reverse Engineering . From Pollution to Remote Code Execution (RCE) Once
Overwriting settings in the rendering engine (like EJS or Pug) to force the server to execute malicious system commands. Summary of the Solution To solve the challenge, a researcher typically: Downloads and extracts the moanshop.7z file.
Issues in how the "shopping cart" or "payment" logic handles quantities or prices. 2. The Critical Flaw: Prototype Pollution
Leftover API keys or developer credentials.