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POST /v1/reports had no authentication and no rate limit, and counted
every raw report row toward AUTO_BLOCK_THRESHOLD regardless of who
sent it or from where — two anonymous requests naming any blake3 hash
added it to the hub-wide content blocklist. A network-wide censorship
and DoS primitive for anyone who learns a public file's hash.
- require a signed-in account (get_current_user)
- rate-limited (10/hour)
- threshold now counts DISTINCT reporting accounts (reporter_id),
one vote per account per hash; raised 2 -> 3
- refused outright (403) when the hub has public groups switched off:
a private-only hub brokers no public content and nothing syncs the
blocklist, so the endpoint would be pure abuse surface
- admin blocklist management (/v1/admin/blocklist*) is untouched, so a
manual block still works regardless of the public-groups setting
Noted while fixing: no node currently consumes ContentBlocklist
(swarm_register checks the separate CSAM list), so the network-wide
block effect was latent — the abuse surface (DB fill, poisoned
moderation signal) was live today.
Tests rewritten in test_moderation.py.
Third security review, finding H2.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011pG75yGK3NthNfyjH74omG
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8.1 Config-based admin authz (require_admin on all admin endpoints)
8.2 Email encrypted at rest (AES-256-GCM, HKDF from hub Ed25519 key)
8.3 Refresh token rotation with family-based reuse detection
8.4 Federation persistence (HubPeer model replaces in-memory dict)
8.5 Federation token verification now async (DB-backed)
8.6 CSAM hash check wired into swarm registration flow
8.7 Rate limiting on auth endpoints (5/10/20 per minute)
8.8 Healthcheck endpoint (GET /v1/health, no auth)
8.9 IP log cleanup background task (365-day retention)
8.10 Argon2id params bumped to 256 MB (pw_version, rehash on login)
Deployed to meshbay.org — schema migrated, existing emails encrypted.
117 tests pass (29 hub, 88 common+node).
Resolves security review items S1, S2, S5.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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DB: ContentReport + ContentBlocklist tables.
POST /v1/reports: public endpoint, auto-blocks after 2 reports.
GET /v1/blocklist/check: node sync check before serving public content.
GET /v1/blocklist: full list for node startup sync.
GET|POST|DELETE /v1/admin/blocklist: admin management.
6/6 tests. Full suite: 59/59.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
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