---
issue: "004"
title: "fetch-tx, auto-fetch-missing, and debug payment endpoints have no authentication"
severity: critical
domain: payment
labels: [security, backend, bug]
status: open
created: 2026-05-29
source: Doc vs Code Audit 2026-05-29
---

# 🔴 fetch-tx, auto-fetch-missing, and debug payment endpoints have no authentication

**Severity:** critical
**Domain:** payment
**Labels:** security, backend, bug

## Description

Three backend payment endpoints are mounted with **no `authenticateToken` middleware**, despite being documented as admin-only:

1. `POST /api/payment/payments/:id/fetch-tx` — triggers on-chain transaction fetch for a payment
2. `POST /api/payment/payments/auto-fetch-missing` — triggers bulk on-chain fetch for all pending payments
3. `GET /api/payment/payments/:id/debug` — returns full payment document including blockchain metadata and wallet monitor state

Any unauthenticated caller (no Authorization header needed) can call all three endpoints.

## Current Behavior

```bash
curl -X POST https://api.example.com/api/payment/payments/anyId/fetch-tx
# Returns 200 and triggers on-chain state write
```

## Expected Behavior

All three endpoints should require `authenticateToken` + `authorizeRoles('admin')` and return `401` without credentials.

## Affected Files

- `backend/src/routes/paymentRoutes.js` — route definitions for `fetch-tx`, `auto-fetch-missing`, `debug`

## References

- [Doc vs Code Audit Report](../09%20-%20Audits/Doc%20vs%20Code%20Audit%20Report%20-%202026-05-29.md) — Findings C28, M40
- Related: [[ISSUE-005-scanner-status-no-auth]]