VoidAuth

VoidAuth is an open-source authentication and user management service designed to sit in front of your self-hosted applications. It provides Single Sign-On via OpenID Connect and can also protect apps through a reverse-proxy ForwardAuth flow.

Key Features

• OpenID Connect (OIDC) identity provider for SSO integrations
• ForwardAuth-style proxy authentication for protecting apps behind a reverse proxy
• Built-in user and group management with an admin panel
• User invitations and optional self-registration
• Multi-factor authentication support, including passkeys (WebAuthn)
• Secure password reset via email verification
• Customization for branding and emails (logo, title, theme color, email templates)
• Encryption at rest with PostgreSQL or SQLite-backed storage

Use Cases

• Centralized login for a homelab or self-hosted app suite using OIDC
• Protecting internal dashboards and services via reverse-proxy ForwardAuth
• Lightweight IAM for small teams with groups and invitation-based onboarding

Limitations and Considerations

• The project notes it has not been security audited; evaluate risk and keep dependencies updated

VoidAuth fits users who want a modern, self-hosted SSO solution with both OIDC-based federation and reverse-proxy authentication, plus practical account management features. It is especially suited for homelabs and small organizations standardizing authentication across multiple services.