Authelia v4.39.25 released on 10-09-2026

Authelia v4.39.25 is out now. Fixes handling of SMTP IPv6 literal addresses in the notification SMTP code, resolving related issues for setups that send notifications to IPv6 literal addresses.
See the full release details on the project’s GitHub release page; Docker images for the release are published and can be pulled directly.
What’s in this release
- notification: fix for SMTP IPv6 literal addresses (commit ffa6a89) — closes #13041 and references #13051; authored by @james-d-elliott
- Docker images published: docker pull authelia/authelia:4.39.25 and docker pull ghcr.io/authelia/authelia:4.39.25
- Release metadata published 2026-09-10 12:44:03; full release details available via the GitHub releases API
Upgrade notes
- No breaking changes are listed in the release notes; test the update in your environment and review the GitHub release for any configuration impacts.
- Rollback: if needed, redeploy the container image tag you were using before upgrading (pull your previous image tag and restore).
Share any comments or problems you encounter on the Authelia GitHub repository so the maintainers and community can follow up on your experience.


