.NET Core is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET Core that address a security vulnerability are now available. The updated versions are .NET Core SDK 3.1.106 and .NET Core Runtime 3.1.6. * .NET Core: XML source markup processing remote code execution Default inclusions for applications built with .NET Core have been updated to reference the newest versions and their security fixes. For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.