.NET Core 1.0, 1.1 and 2.0 perform improper processing of XML documents. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to a .NET Core application.
This issue has been addressed in the following products:
.NET Core on Red Hat Enterprise Linux
Via RHSA-2018:0379 https://access.redhat.com/errata/RHSA-2018:0379
Closing as this flaw was addressed in an errata.