The Tries counter on login and registration sessions was checked but
never incremented, making the brute-force protection dead code. An
attacker could retry verification codes indefinitely within the session
TTL. Now each failed attempt increments and persists the counter.
- Return actual captcha verification errors instead of generic
internal errors in login, registration, and reset password flows
- Fix Sentry capturing wrong variable (err -> xerr) in
RegistrationConfirm
- Pass AuthSecret as []byte to JWT SignedString/keyfunc
- Send form data in request body instead of PostForm for Turnstile
- Improve Turnstile non-200 error handling with response body logging
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Matthew Meszaros