Disable CSRF validation for individual actions

Is there a way to disable CSRF validation for some actions of the controller keeping it enabled for the other ones?

In my case I have several configurable Action classes, that are intended to be injected into controllers. I can’t pass csrf validation token into the AJAX request because the thing I’m working with is external (made not by me) WYSIWYG plugin at the frontend. Yes, I can still disable csrf validation of the whole controller using these actions, but it may be insecure.