Improper Privilege Management
In SilverStripe before 4.3.5 and before 4.4.4, there is access escalation for CMS users with limited access through permission cache pollution.
CWE-269 - Improper Privilege Management
An effective privilege management infrastructure provides valid users with required access and privileges across heterogeneous technology environments. An application with a faulty privilege management infrastructure allows higher than authorized privileges or enables privilege escalation. This can lead to security incidents such as system infiltration, data breach, and complete system takeover.