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Fix HIGH findings from 2026-09-24 maintenance review

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- nginx: resolve real client IP through Cloudflare -> NPM so rate limits
  are per client instead of shared across all users
- Bump vulnerable Python deps (PyJWT auth bypass, anyio, starlette via
  fastapi 0.141.1, cryptography, python-multipart, Mako); pin PyMySQL
  1.1.2 since 1.2.x breaks SQLAlchemy 2.0.35's aiomysql ping
- Backend: python 3.12.14-slim, apt-get upgrade, drop unneeded build deps
- Frontend: nginx 1.30.5-alpine (stable) + apk upgrade
- MySQL 8.0.40 (EOL) -> 8.4.11 LTS; add healthcheck start_period so
  slow startups (e.g. data upgrades) don't abort dependent services
- Add maintenance review report

Co-Authored-By: Claude Opus 5.5 <[email protected]>
This commit is contained in:
derekcandClaude Opus 5.5 committed 2026-09-24 23:38:16 -07:00
1 parent 8e92ae6073
commit 3170c7f4eb
6 files changed
+260 -10
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frontend/nginx.conf
+30
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@@ -1,3 +1,33 @@
# Real client IP — traffic arrives via Cloudflare → NPM (172.16.22.21), so
# $remote_addr would otherwise be NPM for every request and rate limits would
# be shared by all clients. Walk X-Forwarded-For right-to-left past trusted hops.
# Cloudflare ranges: https://www.cloudflare.com/ips/
set_real_ip_from 172.16.22.21;
set_real_ip_from 173.245.48.0/20;
set_real_ip_from 103.21.244.0/22;
set_real_ip_from 103.22.200.0/22;
set_real_ip_from 103.31.4.0/22;
set_real_ip_from 141.101.64.0/18;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 104.16.0.0/13;
set_real_ip_from 104.24.0.0/14;
set_real_ip_from 172.64.0.0/13;
set_real_ip_from 131.0.72.0/22;
set_real_ip_from 2400:cb00::/32;
set_real_ip_from 2606:4700::/32;
set_real_ip_from 2803:f800::/32;
set_real_ip_from 2405:b500::/32;
set_real_ip_from 2405:8100::/32;
set_real_ip_from 2a06:98c0::/29;
set_real_ip_from 2c0f:f248::/32;
real_ip_header X-Forwarded-For;
real_ip_recursive on;
# Rate limiting zones — included inside http{} block
limit_req_zone $binary_remote_addr zone=auth_limit:10m rate=5r/m;
limit_req_zone $binary_remote_addr zone=tv_limit:10m rate=10r/m;