netplan leaks the private key of wireguard to local users. Versions after 1.0 are not affected.
https://www.cve.org/CVERecord?id=CVE-2022-4968
https://github.com/canonical/netplan/commit/4c39b75b5c6ae7d976bda6da68da60d9a7f085ee
https://bugs.launchpad.net/ubuntu/+source/netplan.io/+bug/2065738