Use safe_load method

Author: sferik

lib/rails_admin/config/fields/types/serialized.rb

@@ -9,11 +9,11 @@ class Serialized < RailsAdmin::Config::Fields::Types::Text
           RailsAdmin::Config::Fields::Types::register(self)
 
           register_instance_option :formatted_value do
-            YAML.dump value
+            YAML.dump(value)
           end
 
           def parse_input(params)
-            params[name] = (params[name].blank? ? nil : YAML.load(params[name], :safe => true)) if params[name].is_a?(::String)
+            params[name] = (params[name].blank? ? nil : YAML.safe_load(params[name])) if params[name].is_a?(::String)
           end
         end
       end