Course 39 - NodeJS Security Pentesting and Exploitation | Episode 2: Mitigating RCE, OS Injection, and Path Traversal Vulnerabilities
Published: July 8, 2026
Duration: 21:27
In this lesson, you’ll learn about: critical Node.js vulnerabilities caused by unsafe user input handling, including RCE, command injection, XSS, and directory traversal1. Core Security Principle🔹 Key idea:
Never trust user input👉 Any data from users must be treated as hostile by default
Without validation, it can become a direct execution path into the system.2. Remote Code Execution (RCE) via eval()🔹 Dangerous functions:eval()setTimeout()setInterval()new Function()🔹 Why they are riskyThese functions execute raw JavaScript strings🔹 Attack outcomes:Infinite loops →...
Never trust user input👉 Any data from users must be treated as hostile by default
Without validation, it can become a direct execution path into the system.2. Remote Code Execution (RCE) via eval()🔹 Dangerous functions:eval()setTimeout()setInterval()new Function()🔹 Why they are riskyThese functions execute raw JavaScript strings🔹 Attack outcomes:Infinite loops →...