GHSA-R42C-3RR2-JRFP Concrete CMS is Vulnerable to Cross-Site Request Forgery

Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/install/download/. The download method in concrete/controllers/singlepage/dashboard/extend/install.php checks only the canInstallPackages permission before fetching a remote marketplace...