Varnish Controller 7.3.1 Release

Published December 18, 2025.

Only NATS, UI, and brainz need to be updated for this release.

Fix a PostgreSQL scalability issue when aggregating large Varnish statistics by explicitly selecting a more efficient SQL query plan.
UI: Fix a bug when logging in over unencrypted connections that resulted in a Forbidden - CSRF token not found in request error message.
Upgrade NATS to version 2.12.3, buit with Go 1.25.5.
Test all FQDNs when probing CAA entries for ACME certificates.
Built with Go 1.25.5.

See Varnish Controller Changelog for more details on the changes and the upgrade notes for more details on how to upgrade.