A spoofing vulnerability exists in Microsoft SharePoint when it improperly handles requests to authorize applications, resulting in cross-site request forgery (CSRF).To exploit this vulnerability, an attacker would need to create a page specifically designed to cause a cross-site request, aka 'Microsoft SharePoint Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-1259.
https://www.tenable.com/blog/microsofts-september-2019-patch-tuesday-tenable-roundup
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1261