CVE-2018-8426: Microsoft SharePoint Enterprise Server 2013

Medium severity, CVSS 5.4. EPSS: 2.3% 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 Server, Microsoft SharePoint.

Affected products

• Microsoft SharePoint Enterprise Server 2013: affected versions not specified
• Microsoft SharePoint Enterprise Server 2016: affected versions not specified
• Microsoft SharePoint Server 2010: affected versions not specified

Published 2018-09-13. Last modified 2026-06-17.