Common Issues
auth
Users Can See or Do Things They Shouldn't
Your app doesn't properly control who can see or do what. Regular users might access admin pages, see other users' private data, or perform actions (like deleting or editing) that should be restricted.
Common Causes
- No role-based access control (RBAC) implemented
- Access checks only on the frontend — the API allows anything
- Row Level Security not configured (anyone can query any data)
- Admin routes are accessible by anyone who knows the URL
- User ID not validated on API calls — users can modify other users' data by changing the ID
How to Fix It
- Test by logging in as a regular user and navigating directly to admin URLs
- Check if API endpoints verify the user's role before performing actions
- If using Supabase, implement RLS policies that restrict data access by user ID
- Add server-side authorization checks — never rely only on hiding UI elements
- Verify that users can only read/update/delete their own data
Real developers can help you.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
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.
Rudra Bhikadiya
I build and fix web apps across Next.js, Node.js, and DBs.
Comfortable jumping into messy code, broken APIs, and mysterious bugs.
If your project works in theory but not in reality, I help close that gap.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Matthew Butler
Systems Development Engineer @ Amazon Web Services
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.
PawelPloszaj
I'm fronted developer with 10+ years of experience with big projects. I have small backend background too
AUXLE
I am a Full Stack Developer experienced in building Websites, Web apps and Cross Platform Mobile Apps for Startups and Companies.
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
MFox
Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking.
Describe what's wrong in plain English. No technical knowledge needed.
Get HelpFrequently Asked Questions
Users can access the admin page. Is this a big deal?
Yes. If the admin page has real functionality (delete users, change settings), this is a serious security issue. Get it fixed immediately.
How do I know if my app has permission issues?
Try logging in as a regular user and manually navigating to admin URLs. Also check if you can modify another user's data by changing IDs in API requests.