The issue allows unprivileged local users to read files with root-equivalent permissions when Pebble is running as root. This is due to the read-file API and the associated pebble pull command allowing access from any user, instead of just admin. If an attacker gains local access to the container host, they could hit the Pebble `GET /v1/files?action=read` API and read any file in the workload container, including sensitive information such as ssh keys or database passwords.