* fix(security): gate /api/onboarding/complete on the local-network check (#3765)
Sibling-path gap surfaced by the #3758 release gate. /api/onboarding/oauth/start,
/setup, and /probe are gated by _onboarding_gate_allows(), but
/api/onboarding/complete was not — it called complete_onboarding() unconditionally
(persists onboarding_completed=True, which hides the first-run wizard). On a
passwordless public bind, an unauthenticated no-Origin POST passes generic CSRF
and could flip the wizard off.
Pre-existing (the endpoint was ungated before #3758 too; #3758 only refactored the
three already-gated siblings). Low severity — it toggles a UI flag, not credentials
or access — but the inconsistency is a real hole, so close it the same way as its
siblings.
- Gate /api/onboarding/complete with _onboarding_gate_allows() → 403 when denied.
- Regression tests: public client (no forwarded headers) → 403 + complete_onboarding
NOT called; loopback client → 200; auth-enabled → 200.
- Mark the legacy _is_local_from_handler mirror in test_onboarding_network.py as a
STALE pre-#3758 contract (it trusts unauthenticated XFF); the authoritative
trust-matrix tests live in test_security_review_fixes.py. Migrating the mirror to
delegate to the real helper is tracked as follow-up test debt, out of scope here.
* docs(changelog): stamp v0.51.308 — Release JX (#3765 onboarding-complete sibling-consistency gate)
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Co-authored-by: nesquena-hermes <[email protected]>
b6431eb677