CVE-2019-0557: Microsoft SharePoint Server

Medium severity, CVSS 5.4. EPSS: 2.1% 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 affects Microsoft SharePoint. This CVE ID is unique from CVE-2019-0556, CVE-2019-0558.

Affected products

• Microsoft SharePoint Server: version 2016 only

Published 2019-01-08. Last modified 2026-06-17.