--- a/dbus_service/dbus-service	2021-08-02 20:57:18.511342842 +0800
+++ b/dbus_service/dbus-service	2021-08-02 20:57:47.720742177 +0800
@@ -242,7 +242,7 @@
     # Load and perform basic validation of config file.
     try:
         with (args.configpath / 'dbus-service.yaml').open(mode='rt') as configfd:
-            config = yaml.load(configfd)
+            config = yaml.safe_load(configfd)
     except FileNotFoundError:
         # No configuration file. Create default
         config = {'user_to_sid': {}}