CVE-2026-44176 Kirby: `pages.access` permission is not checked during rendering of page drafts

Kirby is an open-source content management system. Versions prior to 4.9.1 and 5.4.1 do not check the pages.access permission during page draft rendering. Permissions are defined for each user role in the user blueprint site/blueprints/users/.... It is also possible to customize the permissions f...