Cross-Site Scripting Vulnerability in Microsoft Office SharePoint
CVE-2026-97783

8.1HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sharepoint Server 2019
Vendor
CVE Published:
13 October 2026

What is CVE-2026-97783?

A Cross-Site Scripting vulnerability exists in Microsoft Office SharePoint due to improper input neutralization during web page generation. This flaw allows an unauthorized attacker to craft a malicious payload that can be injected into web pages viewed by users. If exploited, this vulnerability could enable various attacks, including spoofing and data manipulation, potentially compromising sensitive information and the integrity of the SharePoint application. Proper validation of user inputs is critical to mitigating this issue.

Affected Version(s)

Microsoft SharePoint Server 2019 x64-based Systems -

References

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

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.