The issue was addressed by restricting options offered on a locked device. This issue is fixed in iOS 13.1 and iPadOS 13.1. A person with physical access to an iOS device may be able to access contacts from the lock screen.
[
{
"product": "iOS",
"vendor": "Apple",
"versions": [
{
"lessThan": "iOS 13.1 and iPadOS 13.1",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]