Cross-Site Scripting Vulnerability in Microsoft Office SharePoint
CVE-2026-47639

5.4MEDIUM

Key Information:

Vendor

Microsoft
Status
Microsoft Sharepoint Enterprise Server 2016
Microsoft Sharepoint Server 2019
Microsoft Sharepoint Server Subscription Edition
Vendor
CVE Published:
9 June 2026

What is CVE-2026-47639?

An improper neutralization of input vulnerability in Microsoft Office SharePoint enables authenticated attackers to execute cross-site scripting attacks. By exploiting this flaw, attackers can manipulate web content, potentially leading to network spoofing incidents. It is vital for organizations using this platform to review their security measures and apply the necessary patches to mitigate the risks associated with this vulnerability. For more information, visit the Microsoft SharePoint Server Spoofing Vulnerability advisory.

Affected Version(s)

Microsoft SharePoint Enterprise Server 2016 x64-based Systems 16.0.0 < 16.0.5556.1005

Microsoft SharePoint Server 2019 x64-based Systems 16.0.0 < 16.0.10417.20153

Microsoft SharePoint Server Subscription Edition x64-based Systems 16.0.0 < 16.0.19725.20384

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.