AppSec for JS

JavaScript security with Snyk

From your first line of code to your last npm dependency, Snyk keeps your JavaScript applications secure right from your IDE, CLI, and Git workflows.

Find and fix JavaScript vulnerabilities fast

Snyk secures vulnerabilities in your JavaScript code and npm libraries right from your IDE, Git repos, and CLI.

Integrate your environments

Run Snyk in your CLI, or seamlessly integrate with your IDE and Git repos.

Scan for JS vulnerabilities

Snyk continuously monitors your apps for vulnerabilities in real time.

Fix quickly and move on

Apply in-line, AI-powered security fixes in your IDE or merge fix PRs.

Comprehensive JavaScript security coverage

Snyk supports a variety of JavaScript package managers, frameworks, libraries, and IDEs.

JavaScript security built into your environments

By building security scanning and fix advice into your CLI, IDE, and Git repos, developers can move faster and security teams spend less time on low level reviews.


Find and fix JavaScript code, open source libraries, and container vulnerabilities in your projects and pipelines.


Scan your JavaScript code in real-time and get AI-powered, in-line fix suggestions directly in your favorite IDEs, including Visual Studio Code and Eclipse.

Git repos

Ship secure JavaScript code with Snyk’s PR vulnerability checks, one-click fixes, and continuous monitoring.

Learn about the top JavaScript vulnerabilities

Based on Snyk’s scan data, the average JavaScript project has 47 vulnerabilities. Learn about the top JavaScript code and open source vulnerabilities that are most likely to appear in your projects based on Snyk scan results and security research.

JavaScript security lessons

Learn how to secure your applications against common JavaScript vulnerabilities via interactive, self-paced lessons.

JavaScript security resources

Check out our cheat sheets and blogs for best practices for keeping your JavaScript projects secure.

Comprehensive security coverage across languages

Snyk supports your favorite languages, so you can secure your applications throughout the SDLC.


How safe is JavaScript?

JavaScript is not inherently unsafe, but it is possible for developers to introduce vulnerabilities to their JavaScript code if they are not experienced with Security in the language, or are working without the help of security tools like Snyk

Examples of JavaScript vulnerabilities

JavaScript vulnerabilities include XSS, CSRF, injection attacks, prototype pollution, and more. To learn more about JavaScript vulnerabilities and how to fix them, check out Snyk Learn.

How can Snyk help secure JavaScript?

Snyk scans your JavaScript applications for vulnerabilities in real time and provides suggested fix advice for quick remediation. 

What JS Vulns can Snyk identify?

Snyk can identify JavaScript code, open source libraries, and container vulnerabilities. Examples of JavaScript vulnerabilities include DOM cross-site scripting, no rate limiting, and directory traversal.

Where does Snyk fit into your JavaScript workflow?

Snyk integrates easily in your existing tools and workflows throughout the SDLC, including the CLI, IDE, Git repos, and container registries. Snyk supports JavaScript IDEs including WebStorm, Visual Studio Code, and Eclipse, so you can find and fix JavaScript vulnerabilities in-line with suggested fix advice. Snyk integrates with your favorite SCMs to provide continuous repo monitoring, PR scans, and suggested fix PRs. 

Snyk is a developer security platform. Integrating directly into development tools, workflows, and automation pipelines, Snyk makes it easy for teams to find, prioritize, and fix security vulnerabilities in code, dependencies, containers, and infrastructure as code. Supported by industry-leading application and security intelligence, Snyk puts security expertise in any developer’s toolkit.

Start freeBook a live demo

© 2024 Snyk Limited
Registered in England and Wales