These days of cyber warfare and targeted supply chain attacks on open source packages we developers are more attentive to security vulnerabilities. Yet writing secure code to avoid security vulnerabilities is an entirely different paradigm that needs to be mastered. One such vulnerability is Path Traversal, and while it may sound harmless, it is in fact ubiquitous and presents a significant risk. Learn how path traversal vulnerabilities manifest in your own applications' code to dependencies to core modules in the Node.js runtime. Path traversal vulnerabilities may endanger your local development setup and lead to insecure Node.js applications risking your production environment. Join me to gain a new secure coding skill and learn how to mitigate this set of security vulnerabilities.