We’ve just released ClassicPress 1.0.1, a security release.
We recommend that you update your site(s) as soon as possible.
ClassicPress 1.0.1 is a security release to match the security changes in WordPress 5.1.1 and 4.9.10 (both released today). It is available now. The new ClassicPress release also contains one minor bugfix related to WP-CLI.
You can find more information and update instructions on our forums.
As always, we’ll be around if you need any help, just make a new thread on our support forum.