Node.js Secure Coding:

Defending Against Command Injection Vulnerabilities

Learn secure coding conventions in Node.js by executing command injection attacks on real-world npm packages and analyzing vulnerable code.

Thomas Manuel Yoni Tally Mateo Sergio Manu Hung Kriakos Sophia Daniel David Miguel Joachim Jesús DiMilan Ashif Ivan Heru Ngoran +99

Join Kyriakos, Sergio, Mateo, and hundreds of developers who learn from Liran Tal

Node.js Secure Coding, regular light mode edition

Digital book

  • 106 Pages
  • 12 Vulnerable npm Packages
  • 33 Self-assessment Questions
  • 10 Chapters
  • Summer Sale 30% OFF
Node.js Secure Coding book, Dark Mode Special Edition

Digital book

  • 106 Pages
  • 12 Vulnerable npm Packages
  • 33 Self-assessment Questions
  • 10 Chapters
  • Summer Sale 30% OFF

Community Testimonials

Hear what the community has to say about the book and their recommendations to follow Node.js Secure Coding practices.

Thomas Gentilhomme
Node.js lead at MyUnisoft, Node Security WG

I have finished reading Node.js Secure Coding from Liran Tal. I read the whole thing in an hour without realizing it. I learned and discovered a few things along the way. I laughed at the IFS, didn't see it coming.

Manuel Spigolon
Senior Software Developer at NearForm

Liran Tal, your book on Node.js security is an absolute gem! The abundance of real-world examples with commented fixes is incredibly valuable 👏 Your practical solutions have enlightened me, especially the discovery of the shell-quote module! Recommended to all Node.js developers!

Yoni Goldberg
Software Architect, Node.js Specialist

I wholeheartedly enjoyed working and learning from Liran's expertise in securing applications. With extensive experience speaking at global conferences and actively contributing code to the community, he is a true authority in the field. I highly endorse both his enlightening book and engaging workshop, as they are invaluable resources for anyone looking to enhance their understanding and implementation of application security

Daniel Garcia
Cybersecurity & API Security Consultant

Liran Tal just published a new book about Node.js secure coding. It is worth taking a look at!

Eli (Tom) Lelonek
Application Security Manager at Allot

I highly recommend the new Node.js Secure Coding book published by Liran Tal. Covers not only Node.js but also gives you another perspective on how to achieve good and secure applications, especially with understanding and handling SAST vulnerabilities. Liran - CHAPEAU!

Marco Ippolito
Node.js Collaborator & Developer Experience Engineer @NearForm

Got my copy of Node.js secure coding! I already know I'll learn a lot 🔥

Master Node.js Security Through Hands-On Learning and Best Practices

Comprehensive learning path

Whether you're a beginner or an experienced JavaScript developer, this Node.js Secure Coding book takes a comprehensive approach to security. From basic terminology to introduction to Command Injection, you'll learn about assorted patterns of insecure code observed in popular and well-known npm packages.

Hands-on learning

Unlike other security books that rely on theoretical examples, this book is based on real-world vulnerable code found in popular npm packages. You'll get hands-on experience reviewing and fixing security issues in these projects, learning practical security skills and Node.js secure coding best practices.

Best practices and practical takeaways

Each chapter ends with a summary of the lessons learned, highlighting best practices for securing your Node.js code and improving your overall security knowledge of Command Injection vulnerabilities.

You've leveled up your security skills!

Node.js Secure Coding book features

Liran is a tireless advocate for security in the JS ecosystem. He works hard to build bridges, educate developers about security issues, and support Open Source projects working to improve their security posture. Liran has served on the Node security team and is always available to support developers!

OpenJS Foundation

Elevated Reading Experience

Who said books don't need to look good?

Forget boring black and white, ceremonial typeface and scientific-like book formatting.

With an elegant color palette, thoughtful formatting, and carefully chosen fonts, you'll enjoy a unique reading experience. Every page is designed to help you focus on the content and immerse yourself in the learning journey. Get ready to elevate your reading experience.

Beautiful Color Palette

Everything from the book's cover design to notes, code blocks, typography styles and notes has been designed with a color palette that is unique and specially crafted for this book.

Beautifully Rendered Code Blocks

You'll read a lot of code.

More precisely, you will read a lot of vulnerable code.

To make the source code review process as fluent as possible, code blocks are styled with the rogue source highlighter using the base16.monokai.dark theme. This is to provide an effective color contrast.

nodejs secure coding book features code blocks of vulnerable code

Node.js Security Learnings

Chapters start with a short introduction to the topic, citing key areas of new knowledge gained, and end with a summary and lessons learned.

nodejs secure coding book features chapter intro

Master Node.js Security:
Get Started with Secure Coding

The Definitive Guide to Defending Against Command Injection Vulnerabilities and Building Secure Node.js Applications

Developers Level Up

  • Access an introduction to AppSec and Command Injection
  • 6 chapters reviewing vulnerable npm packages
  • Real-world CVE analysis of vulnerable code
  • Experience hands-on defensive programming approach
  • Command Injection attack and defense secure coding
  • Best practices for securing Node.js code
Start hacking

Do you want to take a sneak peak at the book and get hooked on Secure Coding in Node.js?

Liran Tal

What sets Liran Tal apart as an authority on secure coding in Node.js?

Security Analyst for the Node.js Foundation

In his role as a security analyst in the Node.js Foundation's Security Working Group, Liran reviewed hundreds of vulnerability reports for npm packages and established processes for responsible security disclosures and vulnerability triage.

Education is a core practice

Passionate about educating developers on application security and secure coding practices, Liran is a world-wide international speaker, workshop instructor, and author of several books on the subject. He occasionally speaks on software security topics at academic institutions, such as presenting to students at the Electrical and Computer Engineering School at Purdue University.

Award-winning GitHub Star ⭐️

Liran received the GitHub Star recognition award from GitHub for his work educating and inspiring developers.

Recipient of the Pathfinder for Security Award 🎖️

Honored with the OpenJS Foundation Pathfinder for Security Award, Liran is recognized for his work advancing Node.js security.

Security Researcher

An accomplished security researcher, Liran has disclosed security vulnerabilities in various open source software projects, including being credited with CVEs impacting npm packages.

Acclaimed Recognition at Black Hat

Liran's work on supply chain security research, including Lockfile Injection, was presented at the prestigious Black Hat Europe 2021 cybersecurity conference. Liran is also the creator of several developer security tooling projects such as npq, is-website-vulnerable, and snync, which help developers and enterprises defend against dependency confusion attacks.

About Liran Tal

Liran Tal is an accomplished software developer, respected security researcher, and prominent advocate for open source software in the JavaScript community. As an experienced author and educator, Liran has written several widely respected books on software security. These include "Serverless Security" published by O'Reilly, as well as the self-published titles "Essential Node.js Security" and "Web Security: Learning HTTP Security Headers". Liran's leadership in open source security includes significant contributions to OWASP projects, recording supply chain security incidents at the CNCF, and various OpenSSF initiatives. Currently, Liran is a developer advocate at Snyk where he empowers developers with the knowledge and tools needed to build and deploy secure software.

Frequently Asked Questions

Will I learn Node.js security best practices?

I wrote this book first and foremost as a Node.js coding best practices so you can apply secure coding conventions. You can think of it as a Node.js security checklist that you can apply at work or in your own projects.

Will I learn about Node.js security vulnerabilities?

Yes, more than you realized. Forget common Node.js security tutorials and generic security guides - experience true security expertise with this hands-on approach that will analyze actual npm packages that were found vulnerable, some of which you may use today in your projects, and learn why they were vulnerable and how to fix insecure code.

What programming level is required to benefit from this book?

This book doesn't assume any prior knowledge of security nor advanced knowledge of Node.js. It opens with a short introduction to application security, then to Command Injection class of vulnerabilities, and continues to deep-dive into publicly-known vulnerable npm package versions. You will read a lot of code and learn why it's insecure, and how to fix it.

Can it help with Node.js API security?

Probably. As a backend developer, you may need to resort to process execution APIs such as exec() or spawn() in order to perform image processing off the main thread, or other use-cases. You will learn how to secure your Node.js APIs in reference to preventing common Command Injection pitfalls and insecure coding.

Can I contact the author for additional help or questions?

Yes, anytime. I'm always happy to help! Reach out to me here [liran at lirantal dot com].

Does this book focus on other secure Node.js aspects?

No, it focuses specifically and entirely on Command Injection vulnerabilities and how to prevent them. Regardless, it will likely teach you about application security topics and Node.js security best practices that you can apply in your own projects.


of Downloads

Millions of for vulnerable open-source npm packages and projects reviewed in this book, demonstrating the wide impact on the ecosystem.



2 introductory chapters, 6 CVE-focused chapters reviewing real-world vulnerable npm packages, 1 best practice chapter and 1 concluding in-the-wild vulnerabilities review chapter.


CVE Years

This book reviews up-to-date security vulnerabilities from the recent years, ranging from 2018 to 2022.


QUIZ Questions

Yes-no, Fill-the-blanks, and multiple answers questions to help you evaluate and test your knowledge in Node.js secure coding



Extensive hands-on exercises and practical code review of vulnerable code to draw insights and lessons learned


vulnerable npm packages

6 CVE chapters deeply reviewing vulnerable npm packages for lessons learned on command injection vulnerabilities, and 6 more references to vulnerable npm packages to exercise your secure coding skills.

Node.js Security

Master secure coding in Node.js with real-world vulnerable dependencies and experience secure coding firsthand