Removing the second factor is a security-state change, so it should not leave
stale credentials behind. The disable endpoint now drops every other web
session, every native refresh token, and every trusted device, keeping only the
caller's current session. The lockout-recovery CLI does the same out of band,
clearing all sessions and trusted devices for the account.
Add the TOTP enroll/confirm/disable surface and Argon2id-hashed recovery
codes as the v1.23 second factor.
- totp.ts wraps otpauth (zero-dep) pinned to the interop floor (SHA-1, 6
digits, 30 s) with a +/-1 drift window. Replay protection persists the last
accepted time-step per account (User.totpLastStep, migration
0202_v123_totp_laststep) and rejects any step that is not strictly newer,
so a captured code dies the instant it is accepted once.
- recovery-codes.ts issues ten single-use, high-entropy codes, Argon2id-
hashed at rest, shown once; regeneration replaces the entire prior set in a
transaction and verification burns the matched code with a guarded update.
- The TOTP secret is stored AES-256-GCM encrypted (already registered in the
encrypted-columns registry + rotation script); decrypt is fail-closed.
- Routes: setup (pending secret), confirm (activate + issue recovery codes),
disable (step-up + current factor), recovery-codes/regenerate (step-up).
Setup/confirm are cookie-only; disable/regenerate add requireFreshMfa.
- scripts/disable-mfa.ts is the operator escape hatch for a locked-out
self-hoster, audited, run via pnpm dlx tsx.
Marc-André Bombeck