- Backported comprehensive security hardening from 2.6.2 across auth, API keys, databases, realtime, GraphQL, storage, VCS, functions, migrations and messaging; updated Brotli runtime to a patched version fixing CVE‑2026‑111497.
- Tightened defaults and permission checks: invalid API keys now return 401, secrets are write‑only, MFA codes compared in constant time, added rate limits, enforced permissions on many services, and removed secret data from public responses.
- Introduced new APP_ALLOWED_INTERNAL_ADDRESSES env var for internal relays, upgraded dependent libraries (brotli, libcurl, swoole) and applied numerous bug fixes across the platform.