{"podcast":{"title":"CyberCode Academy","slug":"cybercode-academy-7578615","podcast_index_feed_id":7578615,"rss_url":"https://www.spreaker.com/show/6790974/episodes/feed","website_url":"https://www.spreaker.com/podcast/cybercode-academy--6790974","image_url":"https://d3wo5wojvuv7l.cloudfront.net/t_rss_itunes_square_1400/images.spreaker.com/original/5f51ccc7b22fdba95149ffa6346f1533.jpg","author":"CyberCode Academy","episode_count":297,"summary":"Welcome to CyberCode Academy — your audio classroom for Programming and Cybersecurity. 🎧 Each course is divided into a series of short, focused episodes that take you from beginner to advanced level — one lesson at a time. From Python and web development to ethical hacking and digital defense, our content transforms complex concepts into simple, engaging audio learning. Study anywhere, anytime — and level up your skills with CyberCode Academy. 🚀 Learn. Code. Secure. You can listen and download our episodes for free on more than 10 different platforms: https://linktr.ee/cybercode_academy","last_synced_at":"2026-07-13T14:17:20.596630+00:00","page_url":"https://stenobird.com/podcast/cybercode-academy-7578615"},"episode":{"title":"Course 39 - NodeJS Security Pentesting and Exploitation | Episode 2: Mitigating RCE, OS Injection, and Path Traversal Vulnerabilities","slug":"course-39-nodejs-security-pentesting-and-exploitation-episode-2-mitigating-rce-os-injection-and-path-traversal-vulnerabilities","published_at":"2026-07-08T06:00:02+00:00","page_url":"https://stenobird.com/podcast/cybercode-academy-7578615/course-39-nodejs-security-pentesting-and-exploitation-episode-2-mitigating-rce-os-injection-and-path-traversal-vulnerabilities","show_page_url":"https://stenobird.com/podcast/cybercode-academy-7578615","url":"https://www.spreaker.com/episode/course-39-nodejs-security-pentesting-and-exploitation-episode-2-mitigating-rce-os-injection-and-path-traversal-vulnerabilities--72712048","audio_url":"https://dts.podtrac.com/redirect.mp3/api.spreaker.com/download/episode/72712048/how_user_input_hijacks_node_servers.mp3","summary":"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 → server crash (DoS) Forced termination (process.exit()) Full server takeover (reverse shell execution) 👉 Key Insight If user input reaches an execution function → the server is effectively “remote-controlled”3. Remote OS Command Injection🔹 Vulnerable function: child_process.exec 🔹 How the attack works: Input is passed into shell commands Attacker injects separators like ; Extra commands execute on the OS 🔹 Example impact: Read sensitive files (e.g., system password data) Execute arbitrary system commands 🔹 Safer alternatives: execFile spawn 👉 Why they are safer: They treat input as arguments, not executable shell strings4. Cross-Site Scripting (XSS)🔹 Cause: Unsanitized user input reflected into browser output🔹 Impact: Script execution in victim’s browser Session hijacking potential UI manipulation 👉 Key Insight Server-side mistake becomes client-side compromise5. Directory Traversal (Path Traversal)🔹 Technique: Using patterns like: ../ repeated directory jumps 🔹 Impact: Access files outside intended directory Read sensitive system files Break application file boundaries 6. Big PictureThis episode shows how Node.js apps fail when: Input is executed instead of validated System commands are built from raw…","meta_description":"In this lesson, you’ll learn about: critical Node.js vulnerabilities caused by unsafe user input handling, including RCE, command injection, XSS, and dire…","key_points":[],"chapters":[],"topics":[],"duration_seconds":1287,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/cybercode-academy-7578615/episodes/course-39-nodejs-security-pentesting-and-exploitation-episode-2-mitigating-rce-os-injection-and-path-traversal-vulnerabilities/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/cybercode-academy-7578615/course-39-nodejs-security-pentesting-and-exploitation-episode-2-mitigating-rce-os-injection-and-path-traversal-vulnerabilities.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}