fix vulnerabilities

app/controllers/admin/invitations_controller.rb

@@ -44,6 +44,12 @@ class Admin::InvitationsController < Admin::BaseController
   private
 
   def invitation_params
-    params.require(:user).permit(:email, :name, :role, :primary_language)
+    permitted = params.require(:user).permit(:email, :name, :primary_language)
+
+    if params[:user][:role].present? && User.roles.key?(params[:user][:role])
+      permitted[:role] = params[:user][:role]
+    end
+
+    permitted
   end
 end