CVE-2026-69417

Undergoing Analysis Undergoing Analysis - In Progress

Cross-Site Scripting in Microsoft Office SharePoint

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Microsoft Corporation

Description

Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-09

AI Q&A

2026-09-09

EPSS Evaluated

N/A

NVD

CVE-2026-69417

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	office_sharepoint	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a cross-site scripting (XSS) flaw in Microsoft Office SharePoint. It occurs when user input is not properly neutralized during web page generation, allowing an attacker to inject malicious scripts. This can lead to spoofing attacks where the attacker impersonates legitimate users or content.

Impact Analysis

An attacker could exploit this to steal sensitive data, such as cookies or session tokens, by tricking users into clicking malicious links. They might also perform actions on behalf of users, modify displayed content, or redirect users to phishing sites. Impact depends on user privileges and data access.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR (data protection) and HIPAA (health information privacy). Organizations may face fines, legal penalties, and reputational damage if exploited due to non-compliance with these regulations.

Mitigation Strategies

Apply the latest security updates from Microsoft for SharePoint to address the cross-site scripting vulnerability. Review and enforce strict input validation for user-generated content in SharePoint sites.

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