The Node certificate in Pulp before 2.8.3 contains the private key, and is stored in a world-readable file in the "/etc/pki/pulp/nodes/" directory, which allows local users to gain access to sensitive data.
https://pulp.plan.io/issues/1833
https://bugzilla.redhat.com/show_bug.cgi?id=1325930
https://bugzilla.redhat.com/attachment.cgi?id=1146471