- New passwords (create user, admin reset, own change) need at least 12
characters (ASVS 2.1.1) and may not exceed 72 bytes, which bcrypt would
silently cut off.
- They are checked against Have I Been Pwned with k-anonymity (only the
first 5 SHA-1 characters leave the server, padded responses); an
unreachable service is logged and does not block. PASSWORD_BREACH_CHECK
=false disables it for offline deployments.
- Login accepts existing passwords as before, capped at 256 characters to
bound anonymous bcrypt work.
- Password fields in the UI say the rule up front.
Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>