Laravel 5.6.7 was also just released that includes an update to the Parsedown dependency. Under rare circumstances, it could have some Markdown parsing side effects in your app, but you can always go back to the way it was before by setting the following:
In both cases, their readme recommends using a sanitizer, like HTML Purifier, when dealing with untrusted content.
To get this latest version just run a
composer update on your Laravel app and you’ll be all set.