System.Net.Http is vulnerable to cross-origin resource sharing (CORS) bypass. An attacker is able to exploit the vulnerability to retrieve confidential user and system information.
www.securityfocus.com/bid/106405
access.redhat.com/errata/RHSA-2019:0040
access.redhat.com/security/updates/classification/#moderate
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0545
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0548
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0564