A permissions issue was addressed with improved validation. This issue is fixed in iOS 15.2 and iPadOS 15.2, watchOS 8.3, macOS Monterey 12.1, tvOS 15.2. A malicious application may be able to read sensitive contact information.
https://support.apple.com/en-us/HT212980
https://support.apple.com/en-us/HT212978