We have published release 5.4.8 on GitHub, see https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v5.4.8.
Please have a look at the release notes at https://docu.ilias.de/goto_docu_pg_118818_35.html for more information about this release.
Important: This release contains very important bug
fixes, see https://mantis.ilias.de/view.php?id=26540 and it is
highly recommended to update your system.