GHSA-6GQR-MX34-WH8R Kirby is vulnerable to authorization bypass during page, file and user creation via blueprint injection

TL;DR This vulnerability affects all Kirby sites where users of a particular role have no permission to create pages, files or users pages.create, files.create or users.create permission is disabled. This can be due to configuration in the user blueprints, via options in the model blueprints or v...