In local provider we set Posix permissions via the usage of java.nio.file.attribute.PosixFilePermissions.
This requires an explicit open in CommandBox 6.1 and above - and will require those opens on all JDKs.
I have added --add-opens java.base/sun.nio.fs=ALL-UNNAMED to the JVM args of all applicable servers, but we should revisit this and see if @bdw429s wants to add this open to CommandBox running on JDK 17+