Event socket is only available to localhost or 127.0.0.1 by default. This is a critical default for security. My recommendation to people is to never change the listen-ip as this feature should remain on 127.0.0.1. Any communication to the event socket is safer with a middleman that talks to the event socket's 127.0.0.1.
The reason it should not be exposed to any other IP address other than 127.0.0.1 is that event socket has...
No encryption
No permissions to control access for specific commands