A flaw was found in NetworkManager. The NetworkManager package allows access to files that may belong to other users. NetworkManager allows non-root users to configure the system's network. The daemon runs with root privileges and can access files owned by users different from the one who added the connection.
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2327
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/merge_requests/2324
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/1809