glusterfs is vulnerable to privilege escalation on gluster server nodes. An authenticated gluster client via TLS could use gluster cli with --remote-host command to add it self to trusted storage pool and perform privileged gluster operations like adding other machines to trusted storage pool, start, stop, and delete volumes.
https://security.gentoo.org/glsa/201904-06
https://review.gluster.org/#/c/20328/
https://lists.debian.org/debian-lts-announce/2021/11/msg00000.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10841