CVE-2020-1183: Microsoft SharePoint Enterprise Server

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

A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server, aka 'Microsoft Office SharePoint XSS Vulnerability'. This CVE ID is unique from CVE-2020-1177, CVE-2020-1297, CVE-2020-1298, CVE-2020-1318, CVE-2020-1320.

Affected products

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

Published 2020-06-09. Last modified 2026-06-17.