An Insecure direct object reference vulnerability in Nextcloud Server 18.0.2 allowed an attacker to remote wipe devices of other users when sending a malicious request directly to the endpoint.
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00037.html
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00038.html
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00040.html
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00019.html