BREAKING: Supabase JWT Authentication Issues - 401 Errors Identified

Supabase experiencing widespread JWT rejection errors causing 401 authentication failures. Immediate workarounds and status checks provided.

Incident Summary

Supabase is currently experiencing authentication failures resulting in 401 errors across JWT-based requests. This affects API calls, real-time connections, and dashboard access for affected projects.

What's Down

API Authentication: JWT token validation rejecting valid tokens

Real-time Subscriptions: WebSocket connections failing due to auth failures

RLS (Row Level Security): Policies unable to authenticate requests properly

Potentially affected: Projects in specific regions (status varies by location)

How to Check If You're Affected

1. Monitor your logs: Look for 401 Unauthorized responses 2. Check Supabase Status Page: https://status.supabase.com 3. Test authentication: Attempt a basic API call with your JWT token 4. Console errors: Browser console will show failed auth headers

Immediate Workarounds

Short-term Solutions

1. Implement Exponential Backoff ```javascript // Retry failed requests with increasing delays const retryWithBackoff = async (fn, maxRetries = 3) => { for (let i = 0; i < maxRetries; i++) { try { return await fn(); } catch (error) { if (error.status !== 401 || i === maxRetries - 1) throw error; await new Promise(r => setTimeout(r, Math.pow(2, i) * 1000)); } } }; ```

2. Refresh JWT Tokens Proactively

Force re-authentication before token expiry

Don't wait for 401 errors to refresh tokens

Implement token refresh on app startup

3. Use Supabase URL directly (if available)

Verify your project URL is correct

Test with REST client (Postman/Insomnia) to isolate client-side issues

4. Temporary Workaround: Service Role Key (limited use) ```javascript // For non-sensitive operations only - NOT recommended for production const supabase = createClient(URL, SERVICE_ROLE_KEY); // This bypasses RLS but compromises security ```

Alternative Approaches

1. Queue Requests Locally

Cache failed requests in localStorage/IndexedDB

Retry when authentication recovers

Notify users of degraded service

2. Fallback to Read-only Cache

Serve cached data while writes are unavailable

Implement optimistic UI updates

3. Use Alternative Database (Temporary)

I'm unsure about the exact third-party options that integrate seamlessly, but Firebase, PlanetScale, or managed PostgreSQL could serve as temporary fallbacks if you have infrastructure in place

What NOT to Do

❌ Don't hardcode API keys as workaround

❌ Don't disable HTTPS verification

❌ Don't expose service role keys in frontend code

Recovery Timeline

Supabase engineering is investigating. Typical JWT auth issues are resolved within 30-120 minutes. Monitor their status page for updates.

Recommended Actions

1. Implement monitoring for 401 error spikes 2. Set up alerts via PagerDuty/Sentry for auth failures 3. Review your retry logic - ensure it's production-ready 4. Test failover strategies before next incident 5. Follow Supabase on Twitter (@supabase) for real-time updates

Support

Contact Supabase support directly at support.supabase.com with your project ID for priority assistance.