CVE-2026-30884: Authorization Bypass Through User-Controlled Key

mdjnelson/moodle-modcustomcert is a Moodle plugin for creating dynamically generated certificates with complete customization via the web browser. Prior to versions 4.4.9 and 5.0.3, a teacher who holds mod/customcert:manage in any single course can read and silently overwrite certificate elements...