Files
EventSnap/.env.example
fabi edcef0258c fix(security): batch-2 hardening — XSS allowlist, event-scoping, deploy
Address the seven findings from the security & deployment review.

High:
- upload: make infer authoritative — reject files it can't identify
  (SVG/HTML/JS) and require the detected MIME to be on an ALLOWED_MEDIA
  allowlist; derive the stored MIME and on-disk extension from the
  detected type, ignoring client filename/Content-Type. Closes the
  stored-XSS vector via media served on-origin.
- deploy: rename docker-compose.override.yml -> docker-compose.dev.yml
  so the default `docker compose up -d` no longer publishes Postgres
  5432 to the host; the port map is now opt-in via -f. README updated.

Medium:
- upload: DefaultBodyLimit::disable() -> max(576 MiB) as an HTTP-level
  OOM backstop; handler still enforces precise per-class size limits.
- docker: run backend and frontend as non-root users.

Low:
- social/upload: event-scope toggle_like, list_comments, add_comment,
  delete_comment, edit_upload, delete_upload via find_by_id_and_event /
  soft_delete_in_event — cross-event IDs now resolve to 404.
- Caddy: site-wide HSTS / nosniff / X-Frame-Options / Referrer-Policy,
  plus Content-Disposition: attachment on /media/originals/*.
- .env.example: replace default Postgres password with a CHANGE_ME hint.

Out of scope: localStorage JWT (root cause fixed; httpOnly cookies are a
larger change tracked separately).

Verified: cargo build (no new warnings), cargo test (3 passed),
caddy validate, docker compose config (no 5432 published by default).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-29 19:39:29 +02:00

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# ── Domain ────────────────────────────────────────────────────────────────────
# Public domain Caddy will serve and obtain a TLS certificate for.
DOMAIN=my-event.example.com
# ── App server ────────────────────────────────────────────────────────────────
APP_PORT=3000
# ── Database ──────────────────────────────────────────────────────────────────
# Set a strong password and keep it in sync between DATABASE_URL and
# POSTGRES_PASSWORD. Generate one with: openssl rand -hex 24
DATABASE_URL=postgres://eventsnap:CHANGE_ME_use_a_strong_password@db:5432/eventsnap
POSTGRES_USER=eventsnap
POSTGRES_PASSWORD=CHANGE_ME_use_a_strong_password
POSTGRES_DB=eventsnap
# ── Authentication ────────────────────────────────────────────────────────────
# Generate with: openssl rand -hex 64
JWT_SECRET=change_me_to_a_random_64_byte_hex_string
SESSION_EXPIRY_DAYS=30
# Admin dashboard password (bcrypt hash).
# Generate with: htpasswd -bnBC 12 "" yourpassword | tr -d ':\n'
ADMIN_PASSWORD_HASH=$2y$12$placeholder_replace_me
# ── Event ─────────────────────────────────────────────────────────────────────
EVENT_NAME=Max & Maria's Wedding
EVENT_SLUG=max-maria-2026
# ── Storage ───────────────────────────────────────────────────────────────────
MEDIA_PATH=/media
# ── Upload limits ─────────────────────────────────────────────────────────────
DEFAULT_MAX_IMAGE_SIZE_MB=20
DEFAULT_MAX_VIDEO_SIZE_MB=500
# ── Rate limiting ─────────────────────────────────────────────────────────────
DEFAULT_UPLOAD_RATE_PER_HOUR=10
DEFAULT_FEED_RATE_PER_MIN=60
DEFAULT_EXPORT_RATE_PER_DAY=3
# ── Capacity ──────────────────────────────────────────────────────────────────
DEFAULT_ESTIMATED_GUEST_COUNT=100
# Fraction of total storage that triggers the "low storage" warning (0.01.0)
DEFAULT_QUOTA_TOLERANCE=0.75
# ── Workers ───────────────────────────────────────────────────────────────────
COMPRESSION_WORKER_CONCURRENCY=2