Do this instead: https://yourapp.com/reset?shard=33hkr&token=eyJhbGciOi...
| Step | What to check | |------|----------------| | 1 | Does the reset request include the shard prefix ( 33hkr ) in the POST body? | | 2 | Is the token stored in a shared cache (Redis) or a sharded DB? | | 3 | Does the reset link contain an explicit shard=33hkr query param? | | 4 | During validation, does the app look up the user only by email? (Bad) | | 5 | Can the password reset flow be replayed across shards? (Worse) | 33hkr login password reset
April 17, 2026
def handle_password_reset(request): shard_id = request.GET.get('shard') token = request.GET.get('token') if not shard_id or not token: return error("Invalid reset link format") Do this instead: https://yourapp
# Route to the correct shard *before* validating the token user_db = get_shard_connection(shard_id) payload = validate_reset_token(token, shard=shard_id) | | 3 | Does the reset link