A new Mastodon release 4.5.7 was just deployed to all our customer's instances. This is a bugfix release. The mentioned security fixes (FASP related) are for an experimental feature that none of our customers has enabled. https://github.com/mastodon/mastodon/releases/tag/v4.5.7 FASP: https://github.com/mastodon/fediverse_auxiliary_service_provider_specifications