http://wccftech.com/apple-releases-extremely-important-macos-high-sierra-supplemental-update/

Apple has released an extremely important macOS High Sierra supplemental update that fixes a crucial APFS vulnerability.

Apple released macOS High Sierra last month to the public, and today the company is releasing the first ever update to the OS. Not exactly good news if you’re asking me, since the update actually fixes an extremely crucial APFS bug that could allow anyone to see your passwords in plain text using Disk Utility. Here’s the full changelog of the update.