# 3.1.9 ## Upgrading ### File permissions This release makes an important change to File DataObject permissions in order to close a vulnerability in file modification privileges. By default the minimum necessary permission required by any user to modify files has been changed to CMS_ACCESS_AssetAdmin. If you need unauthenticated users, or users with other rights, to edit certain files, then you will need to customise this. E.g. :::php