IMPORTED / COMPARISONS

SUPABASE VS APPWRITE: SECURITY COMPARISON

Supabase and Appwrite are both open-source backend-as-a-service platforms popular with vibe coders. But their security models differ significantly — especially around database access control. We compared authentication, database security, API security, and self-hosting side by side.

The bottom line

Supabase RLS is powerful but easy to misconfigure — and AI tools frequently skip it entirely. Appwrite’s document-level permission model is simpler and safer by default, but less granular for complex access patterns. Choose based on your team’s ability to maintain security policies.

Authentication

Feature Supabase Appwrite Verdict
Auth system GoTrue (battle-tested) Built-in auth with multiple providers Both are solid
OAuth providers 20+ providers via GoTrue 30+ providers built in Appwrite has more built-in
MFA support TOTP MFA available TOTP and SMS MFA Appwrite slightly more options
Session management JWT-based, configurable expiry Session-based with configurable limits Different approaches, both secure

Database Security

Feature Supabase Appwrite Verdict
Access control model PostgreSQL Row-Level Security (RLS) Document-level permissions RLS is more granular
Default security Tables accessible without RLS Collections locked by default Appwrite safer by default
Policy complexity SQL-based RLS policies UI-based permission rules Appwrite simpler, Supabase more powerful
Real-time security Real-time needs RLS policies Real-time respects permissions Both require explicit config

API Security

Feature Supabase Appwrite Verdict
Client-side key Anon key exposed by design Project ID + endpoint exposed Both expose client identifiers
Server-side key Service role key (full access) Server API key (full access) Both must stay server-side
Rate limiting Available on paid plans Built-in rate limiting Appwrite has it by default
API key rotation Manual rotation via dashboard Manual rotation via dashboard Tie — both manual process

Self-Hosting

Feature Supabase Appwrite Verdict
Self-host option Docker-based self-hosting Docker-based self-hosting Both fully self-hostable
Update complexity Database migrations required Docker image updates Appwrite slightly simpler
Security patches Managed by team, self-host manual Managed by team, self-host manual Tie — both require attention
Data sovereignty Full control when self-hosted Full control when self-hosted Tie — both support it

Security risks unique to each

Supabase-specific risks

  • Missing RLS policies: Tables without RLS are fully accessible to anyone with the anon key. AI tools almost never enable RLS.
  • Exposed anon key abuse: The anon key is public by design, but without RLS it grants unrestricted read/write access to all tables.
  • Service key in client code: AI-generated code sometimes uses the service role key in frontend code, bypassing all security.
  • Real-time subscription leaks: Real-time channels without proper RLS policies can broadcast data to unauthorized users.

Appwrite-specific risks

  • Overly permissive collection rules: Setting wildcard permissions on collections exposes all documents to all users.
  • Self-hosted maintenance burden: Self-hosted Appwrite instances require manual security updates and proper infrastructure hardening.
  • API key management: Server-side API keys must be carefully managed — leaked keys grant full admin access to all resources.

How to secure either backend

  1. Enable Supabase RLS on every table immediately after creation — do not deploy without it
  2. Set Appwrite collection permissions to specific roles and users, never use wildcard access
  3. Never use the Supabase service role key or Appwrite server key in client-side code
  4. Audit real-time subscriptions and channels to ensure they respect your access control policies
  5. If self-hosting either platform, keep Docker images updated and restrict network access to admin endpoints
/ NEXT STEP

SCAN YOUR APP

14-day trial. No card. Results in under 60 seconds.

START FREE SCAN →