A logic issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14.1, iOS 17.1 and iPadOS 17.1. An attacker may be able to access passkeys without authentication.
https://support.apple.com/kb/HT213984
https://support.apple.com/kb/HT213982
https://support.apple.com/en-us/HT213984
https://support.apple.com/en-us/HT213982