I found this instructions:
Revealing the content of your DBUS_SESSION_BUS_ADDRESS
like in this answer gives access to every user logged in to your session:
#!/bin/sh
touch $HOME/.dbus/Xdbus
chmod 600 $HOME/.dbus/Xdbus
env | grep DBUS_SESSION_BUS_ADDRESS > $HOME/.dbus/Xdbus
echo 'export DBUS_SESSION_BUS_ADDRESS' >> $HOME/.dbus/Xdbus
exit 0
Wouldn't this be a security risk?