CVMFS

To use CernVM File System mount points on a Mac, two packages are needed:

macFuse
CernVM-FS

MacFuse permissions

During installation a prompt should appear to allow Ben Fisher extension.
This can also be checked with the command:
sudo kmutil load -p /Library/Filesystems/macfuse.fs/Contents/Extensions/26/macfuse.kext (replace 26 with the OS Versions)
If they are not approved to load, go to Settings > Privacy and Security > Security, allow and restart.