Addresses 11 original findings (1 critical, 3 high, 4 medium, 3 low)
plus 4 additional findings from security review:
- Mask secrets in PUT /settings response (was leaking decrypted keys)
- Add paymentCheckoutRateLimit (10/hr/IP) to all 5 checkout endpoints
- Implement durable audit logging to payment_audit_log table
- Pin Stripe API version to 2026-01-28.clover (SDK v20.3.1)
- Add charge.dispute.created/closed webhook handlers with DISPUTED status
- Restore tickets on dispute won, handle charge_refunded closure
- Guard against sentinel passthrough corrupting stored Stripe keys
- Wrap refund DB updates in try/catch with webhook reconciliation fallback
- Add $transaction for product maxPurchases race condition
- Remove dead Payment model lookup from handleChargeRefunded
- Cap donation amount at $100k in both schemas
- Add requirePaymentsEnabled middleware on all checkout routes
- Remove Stripe internal IDs from CSV exports
- Add Cache-Control: no-store on admin settings responses
Bunker Admin
