- Add support for bracketed IPv6 addresses when FQDN is not configured
- Harden password reset URL generation against X-Forwarded-Host header poisoning
- Add test coverage for IPv6-only configurations with malicious headers
- Update imports and clean up exception syntax in shared helpers
- Fix circular cache dependency in TrustHosts where handle() checked cache
before hosts() could populate it, causing host validation to never activate
- Validate both Host and X-Forwarded-Host headers against trusted hosts list
(X-Forwarded-Host is checked before TrustProxies applies it to the request)
- Use base_url() instead of url() for password reset link generation so the
URL is derived from server-side config (FQDN / public IP) instead of the
request context
- Strip port from X-Forwarded-Host before matching (e.g. host:443 → host)
- Add tests for host validation, cache population, and reset URL generation
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
