PostgreSQL announces to deny CVE-2019-9193 as a security vulnerability

By design, this feature allows one who is granted superuser or   to perform actions as the operating system user the PostgreSQL server runs under (normally “postgres”). By design, there exists no security boundary between a database superuser and the operating system user the server runs under. As such, by design the PostgreSQL server is not allowed to run as an operating system superuser (e.g. “root”).

Source: meterpreter.org