ensureDbCompatibility ran ALTER TABLE / CREATE TABLE IF NOT EXISTS on the
login, register, token and session paths, mirroring columns every
migration under prisma/migrations already creates. The entrypoint applies
those migrations before the server listens and stops the boot when one
fails, so the mirror never had work to do, and DDL on a request path
needs the table's owner: a connection that may only read and write rows
fails every login on it. Drop the module, its call sites and the mocks
that stubbed it out.
Deleting an account, a guardian deleting a managed profile, and "Delete
all data" were final the moment they were confirmed: the account row
cascaded into every table and every stored copy, and the off-host objects
were purged in the same breath. Nothing short of rolling the whole
instance back could return one account.
ACCOUNT_DELETION_GRACE_DAYS (14 by default, at most 30, 0 erases at once
as before) now sets a window:
- Account and managed-profile deletion lock the account (migration 0488:
deletion_requested_at, deletion_purge_at, deletion_requested_by_id).
Every session, refresh token, API token, connector, share link and
step-up elevation is revoked in the same transaction, and the record,
its stored copies and its off-host objects are left as they are.
- Sign-in is refused with 403 auth.account.deletion_pending and the
erasure date, after the credential was proved and before a second
factor is asked for. The session and Bearer resolvers and the acting-
account resolver refuse a pending account too, so a credential minted
in the moment before the lock is useless.
- POST /api/admin/users/{id}/undo-deletion (cookie-only, audit-logged)
clears the lock. The admin users list reports the pending state.
- The hourly account-deletion-purge job erases accounts whose window has
ended, exactly as the immediate deletion did, with the off-host purge
request committed alongside. The Guardian invariant is decided again;
a refused erasure stays pending and is reported.
- A wipe first stores the whole record as a PRE_WIPE_<ms> copy through
the writer the weekly copy uses, keeps it out of the wipe, and holds
its off-host purge back with a new not_before on the request. The
ordinary restore brings the record back; restoring that copy withdraws
the held purge. The purge job deletes the copy when its window ends.
Background work skips accounts pending deletion through one shared
predicate (src/lib/account-deletion/active-account.ts): every reminder,
digest, Coach, sync, backfill, rollup, score and backup enumeration
filters with it, and account-deletion-enumeration-guard.test.ts fails on
a query in background work that neither filters nor says why it need
not. Notification delivery and the AI capability loader refuse a pending
account as chokepoints behind it, and the Withings, WHOOP and Telegram
webhooks and the notification quick actions ignore one.
The privacy summary publishes the window. Two pieces of the reminder tick
and the off-host pass moved into modules of their own to keep the files
inside their size ratchet.
132 route handlers spelled out safeJson, safeParse and the 422 refusal by
hand in one of six shapes. Each block becomes one parseJsonBody call with
the same size cap, wide-event action, issue count, error code, message and
status it had, so every response is the one it was. The comments inside
the replaced refusal blocks go with them.
A ratchet (route-body-parse-ratchet) counts the route files that still call
safeJson themselves; the count may only fall.
A server that issues Secure session cookies cannot sign anyone in on a
plain http:// page: the browser drops the cookie. The login request was
still verified, the MFA ticket minted and then claimed, and the next
attempt answered "Invalid or expired challenge".
The web client now sends an optional clientTransport on the browser
sign-in requests (password login, passkey start, both MFA completions).
When the server issues Secure cookies and the page is plain http on a
non-loopback host, the request is refused with 409
auth.session.insecure_transport before the password is checked, a
ticket is minted or claimed, a code is spent, or a passkey challenge is
issued. A request without the field is never refused. The SSO start
takes client_proto/client_host and sends such a page back to the login
page instead of to the provider.
GET /api/auth/registration-status publishes sessionCookieSecure, and the
login page shows the reason with both fixes and disables the sign-in
controls before anything is sent; on localhost it shows a note only.
SESSION_COOKIE_SECURE keeps its meaning; the header heuristic log line
stays.
The login challenge read its attempt count, verified the factor, and only
then incremented. Requests sent in parallel all read the same count below
the cap, so one ticket allowed more guesses than the cap. Each attempt is
now reserved by a single guarded UPDATE before the factor is evaluated,
and a failure only settles the reserved attempt.
Fifty-nine 422s raised off a Zod `safeParse` answered with one opaque
sentence and nothing a client could map onto a field, while the other
166 sent `details.issues` — the multi-issue envelope that exists so a
caller with three bad fields fixes all three in one round-trip. Twelve
of the fifty-nine put a dotted machine token in `error` where the
sentence belongs, so `error` was sometimes text to show a person and
sometimes a token that must not be shown, with nothing in the payload
to tell them apart.
Every one of them now answers through `apiValidationError`, which keeps
the existing `error` string and the existing `meta` byte for byte and
adds the issue list beside them. The dotted tokens keep their place in
`error` for the clients that already match on them and are published in
`meta.errorCode` as well, which is the field a machine code belongs in
and the one a new client should read.
A guard reads the route tree per refusal site rather than per file —
per file is what let this grow, since a route that used the helper once
looked compliant to a `grep -l` sweep — and asserts it still finds the
sites it judges, so a matcher that stops matching fails instead of
reporting a clean zero.
Mirror the TOTP login path: both the security-key verify and verify-options
routes now reject any challenge whose kind is not "login" with the same generic
401, so a future step-up or non-login challenge can never mint a login session
through these endpoints. Set the registration and authentication ceremonies to
userVerification:"required" to match the server's UV enforcement — a key that
passes the browser but skips UV would otherwise fail server-side.
Add an opt-in "remember this device" at the second-factor step. On opt-in
a random token is minted, set in an httpOnly+Secure+SameSite=Strict cookie,
and only its HMAC hash is stored in a new TrustedDevice table. A later sign-in
from the same browser still requires the password (factor 1); a matching,
unexpired trusted device lets the login skip factor 2 only.
The token is never accepted for step-up — a trusted-device login does not stamp
mfaVerifiedAt — so a stolen device cookie cannot reach a destructive action.
Trusted devices are listed and revocable from the security surface, are revoked
wholesale when the second factor is removed or the user signs out everywhere,
and cascade away on account deletion. A recovery-code login never trusts the
browser. Migration 0204 adds the table (and the instance-wide mfa_required
policy column that the enforcement work reads).
When a password is accepted for an account with a second factor, the
login response carries a single-use ticket instead of a session. The
login page now renders a second step: a TOTP or recovery code, or a
WebAuthn security-key assertion scoped to the account's registered keys.
A WebAuthn-only account (no TOTP) is recognised at the password step and
offered the security-key path.
The security-key verify endpoints validate the open ticket, verify the
assertion against the user's second-factor credentials, and only then
mint the session through the shared login tail, so no session exists
before the factor passes. The login page also arms passkey conditional-UI
autofill on the username field.
Reject any challenge that is not a login challenge before minting a session,
cap the disable and confirm request bodies through safeJson, and correct the
recovery-code scan comment to match its early-return-on-match behaviour.
When a password is accepted for an account with a confirmed TOTP factor, the
login route no longer mints a session or token. It creates a single-use,
~5-minute MfaChallenge (the opaque ticket is stored only as a hash) and
returns HTTP 200 with data:null, error:null and meta.mfaRequired + mfaTicket +
methods. The client completes the login at POST /api/auth/mfa/verify with the
ticket + a TOTP or recovery code, receiving the exact same token bundle the
password path issues, with the session stamped second-factor-verified.
- The ticket is claimed once, atomically, only after the factor verifies, so
two concurrent submissions can mint at most one session; no session ever
exists before factor two.
- Wrong codes increment the ticket attempt counter and burn it at the cap
(throttle, not an account lock); the anonymous verify surface is also
rate-limited per IP.
- meta.mfaRequired is returned only after a valid password and the
invalid-credentials response is identical regardless of MFA state, so an
attacker without the password cannot enumerate MFA.
- The session/token tail is extracted to login-response.ts and shared by both
the password path and the verify path, keeping the transport contract
identical. OpenAPI registers the verify endpoint, the MFA management
endpoints, and the mfaRequired login variant.
Marc-André Bombeck