The issue was addressed with improved access restrictions to the file system. This issue is fixed in macOS Sequoia 15.3, Safari 18.3, iOS 18.3 and iPadOS 18.3, visionOS 2.3. A maliciously crafted webpage may be able to fingerprint the user.
https://support.apple.com/en-us/122074
https://support.apple.com/en-us/122073