CVE-2026-26105
Received Received - Intake
Cross-Site Scripting in Microsoft SharePoint Enables Network Spoofing

Publication date: 2026-03-10

Last updated on: 2026-03-13

Assigner: Microsoft Corporation

Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
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Meta Information
Published
2026-03-10
Last Modified
2026-03-13
Generated
2026-06-16
AI Q&A
2026-03-10
EPSS Evaluated
2026-06-14
NVD
CVE-2026-26105
EUVD
EUVD-2026-10667
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
microsoft sharepoint_server 2019
microsoft sharepoint_server 2016
microsoft sharepoint_server to 16.0.19725.20076 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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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
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Executive Summary

This vulnerability is a cross-site scripting (XSS) issue in Microsoft Office SharePoint. It occurs because the software improperly neutralizes input during web page generation, which means that malicious input is not correctly handled or sanitized.

As a result, an unauthorized attacker can exploit this flaw to perform spoofing attacks over a network.

Impact Analysis

This vulnerability can allow an attacker to perform spoofing attacks, which means they can impersonate legitimate users or services within the network.

The impact includes high confidentiality and integrity risks, as indicated by the CVSS score, potentially leading to unauthorized access to sensitive information or manipulation of data.

Compliance Impact

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Detection Guidance

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Mitigation Strategies

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