This is a security update. A security hole was found in Relevanssi that allowed anybody to view site drafts. Versions 2.25 and 4.22 patch this hole. 2.25.2 / 4.22.2 2.25.1 / 4.22.1 2.25.0 / 4.22.0 You can find the new versions from the automatic updates or the Downloads page.