A flaw was found in automation-controller. The notification template Jinja whitelist only inspects static Getattr AST nodes. An attacker with notification template admin privileges can bypass the whitelist using dynamic subscript expressions or conditional gating on runtime values that differ from the test-render stub. Exceptions raised during notification rendering write full Python tracebacks into the notification body, which is sent to the attacker-controlled webhook URL, leaking install paths, Python version, and source file line numbers.