In RPyC 4.1.x through 4.1.1, a remote attacker can dynamically modify object attributes to construct a remote procedure call that executes code for an RPyC service with default configuration settings.
https://rpyc.readthedocs.io/en/latest/docs/security.html
https://github.com/tomerfiliba/rpyc
http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00046.html