CSRF Protection Accidentally Disabled by Cursor
After Cursor refactored your security middleware, CSRF tokens are no longer being validated. Form submissions succeed even with invalid tokens, creating a serious security vulnerability.
The CSRF middleware was either removed or incorrectly configured during code reorganization.
Error Messages You Might See
Common Causes
- CSRF middleware commented out or removed during cleanup
- Exemption list too broad, accidentally exempting all routes
- Token name changed (csrf vs _csrf) without updating templates
- Session middleware moved after CSRF middleware in chain
- CSRF middleware configuration set to disabled mode
How to Fix It
Re-enable CSRF middleware: app.use(csrf({cookie: false, sessionKey: 'session'})). Verify token is passed in forms: <input type='hidden' name='_csrf' value='<%= csrfToken %>'>. Only exempt webhook endpoints like /stripe/webhook.
Real developers can help you.
Vlad Temian
15+ years shipping production infrastructure for startups. Former CTO at qed.builders (acquired by The Sandbox).
Cursor ambassador and agentic tooling builder.
I've scaled systems, automated deployments, and built observability tools for AI coding workflows. I specialize in taking vibe-coded apps from broken prototype to production-ready: fixing Supabase auth/RLS, Stripe integrations, deployment pipelines, and cleaning up AI-generated spaghetti.
I build tools in this space (agentprobe, claudebin, micode) and understand both sides: how AI generates code and why it breaks.
https://blog.vtemian.com/
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Matthew Jordan
I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
prajwalfullstack
Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help
Meïr Ankri
Full-stack developer specializing in React / Next.js / Node.js with 6+ years of experience. I've worked across various sectors including automotive (Reezocar/Société Générale), healthcare (Medical Link SaaS), and e-commerce (Glasman). I build web apps end-to-end, from architecture to production, with a focus on scalability, performance, and code quality. I also mentor junior developers and contribute to technical decisions and code reviews.
Bastien Labelle
Full stack dev w/ 20+ years of experience
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
Victor Denisov
Developer
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Nam Tran
10 years as fullstack developer
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How do I disable CSRF for specific routes?
Use middleware options or conditionally apply: app.post('/webhook', (req,res,next) => csrfProtection(req, res, next) || skip middleware).
Why is my AJAX failing with CSRF?
Pass token in X-CSRF-Token header. Fetch the token from the DOM: document.querySelector('meta[name=csrf-token]').content.