Service
Node.js Security Audit
Not a scanner printout. A developer reading your actual app and telling you what to fix first.
Node.js · Express · Next.js
4-step process
- 4 clear stagesScope to Optional fixes
- Node.js, Expressand 7 more in the stack
- 6 kinds of worklisted below
- Written estimatefixed price, before work starts
What this is
A typical Node.js project pulls in hundreds of packages, runs on a runtime that gets security releases every few weeks, and talks to external services in ways nobody listed. Node2Shell showed how a bug in the runtime can sit behind code that looks fine. A Node.js security audit checks the version you run, the dependency tree, how requests are parsed, what the server fetches from outside, how secrets are stored and what the process can do if something goes wrong. The result is a ranked list with plain explanations.
Who this is for
- SaaS startups and agencies shipping Node.js or Next.js backends to paying customers
- Companies about to answer a client security questionnaire or enterprise vendor review
- Teams that inherited a Node codebase and don't know how stale its dependencies are
- Anyone who wants a second opinion after reading about Node2Shell
What problem this solves
If two or more of these sound familiar, it is worth a conversation.
Vulnerable and abandoned packages
npm audit lists everything. We separate the findings that are reachable in your code from the ones that are noise.
Runtime on an end-of-life version
Node 20, 23 and 25 no longer get fixes. We flag every service on them and describe the move.
Request and outbound handling risks
Body parsing, compression, SSRF-style fetch features and file uploads are where Node apps most often trust input they shouldn't.
Secrets and permissions
Keys committed to repositories, shared credentials, containers running as root. Small habits with large consequences.
What Nimbryx actually builds
Every one of these is built around how your team already works.
Runtime & container review
Node versions, base images, rebuild habits and process privileges across your services.
Dependency analysis
Direct and transitive packages checked for known vulnerabilities, with reachability judged by someone who read the code.
Framework & middleware review
Express, Fastify or Next.js configuration, body-parser settings, headers, rate limiting and error handling.
Outbound request review
Everywhere your server fetches a URL it doesn't control, and what happens if the response is hostile.
Secrets & access review
Environment handling, repository history, CI credentials and who can deploy.
Prioritised report
Ranked findings, estimated effort and the first three things to do on Monday.
How this typically works
From the first conversation to a working system.
Step 1
Scope
Which services, which repositories, which environments. Read-only access is usually enough.
Step 2
Review
Tools for coverage, developer judgement for what matters.
Step 3
Walkthrough
A call to go through the report so every finding makes sense to your team.
Step 4
Optional fixes
We can fix the issues or hand the list to your engineers. Your choice.
The stack we’d likely use
Mature, well-supported tools. The final choice depends on your project, and we explain it before we start.
- Node.js
- Express
- Next.js
- TypeScript
- npm
- Docker
- PostgreSQL
- MongoDB
- Redis
An honest note
When this isn't the right call
This isn't a certified penetration test, and it won't replace one if a regulator or customer requires a formal report from an accredited firm. It's the practical review that finds and fixes the problems in your code and setup.
Not sure which side of the line you’re on? Ask us and we’ll say so.
Is npm audit enough?
It's a start. It doesn't know whether a vulnerable function is reachable in your code, doesn't cover the runtime itself and says nothing about configuration or secrets.
Will you audit Next.js apps too?
Yes. Next.js is Node.js underneath, and we review the server-side code, route handlers, middleware and deployment setup.
How long does it take?
A single service takes a few working days. Several services take longer, and we give an estimate after a short call.
Do you sign an NDA?
Yes, on request, before you share any code or access.
Ready to talk about your project?
Tell us what you're trying to build. We'll reply within one business day with honest thoughts, not a sales pitch.
- First conversation is free
- Written estimate before anything starts
- You own the code