CVE-2017-11820: Microsoft SharePoint Enterprise Server

Medium severity, CVSS 5.4. EPSS: 2.3% chance of exploitation in the next 30 days.

Microsoft SharePoint Enterprise Server 2013 SP1 and Microsoft SharePoint Enterprise Server 2016 allow an attacker to exploit a cross-site scripting (XSS) vulnerability by sending a specially crafted request to an affected SharePoint server, due to how SharePoint Server sanitizes web requests, aka "Microsoft Office SharePoint XSS Vulnerability". This CVE ID is unique from CVE-2017-11775 and CVE-2017-11777.

Affected products

• Microsoft SharePoint Enterprise Server: version 2013 only; version 2016 only

Published 2017-10-13. Last modified 2026-06-17.