archy/loop/pentest/analysis/ssrf.md

## SSRF Analysis Complete

Found **5 SSRF vulnerabilities** across the Archipelago backend:

### Critical (2)
- **SSRF-001**: `backup.upload-s3` — user-supplied `endpoint` URL passed directly to `reqwest` PUT with zero validation. Can reach any internal service (Bitcoin RPC, LND, Grafana). Response status + partial body leaked in errors.
- **SSRF-002**: `backup.download-s3` — same pattern but GET, with **full response body saved to disk** and retrievable via backup APIs. Most dangerous finding — enables complete exfiltration of any internal HTTP endpoint.

### High (1)
- **SSRF-003**: `identity.resolve-name` (NIP-05) — user-controlled `domain` in `user@domain` identifier causes HTTPS GET to arbitrary domain. HTTPS-only limits impact but enables DNS rebinding, IP disclosure, and partial response exfiltration.

### Medium (1)
- **SSRF-004**: `content.download-peer` / `content.browse-peer` — weak `.onion` validation (suffix check only vs. strict 56-char base32 in `node_message.rs`). Mitigated by Tor SOCKS proxy which rejects invalid addresses, but defense-in-depth failure.

### Low (1)
- **SSRF-005**: `webhook.configure` — private IP validation exists but bypassed in dev mode, missing `0.0.0.0`, no DNS rebinding protection, no redirect protection.

Report written to `loop/pentest/analysis/ssrf.md`.