CVE-2020-0891: Microsoft SharePoint Enterprise Server

Medium severity, CVSS 5.4. EPSS: 1.5% chance of exploitation in the next 30 days.

This vulnerability is caused when SharePoint Server does not properly sanitize a specially crafted request to an affected SharePoint server.An authenticated attacker could exploit this vulnerability by sending a specially crafted request to an affected SharePoint server, aka 'Microsoft SharePoint Reflective XSS Vulnerability'. This CVE ID is unique from CVE-2020-0795.

Affected products

• Microsoft SharePoint Enterprise Server: version 2016 only
• Microsoft SharePoint Foundation: version 2010 only; version 2013 only
• Microsoft SharePoint Server: version 2019 only

Published 2020-03-12. Last modified 2026-06-17.