CVE-2026-47634

Analyzed Analyzed - Analysis Complete

Cross-Site Scripting in Microsoft Office SharePoint

Publication date: 2026-06-09

Last updated on: 2026-06-10

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

Probability:
Percentile:

Meta Information

Published

2026-06-09

Last Modified

2026-06-10

Generated

2026-06-30

AI Q&A

2026-06-09

EPSS Evaluated

2026-06-28

NVD

CVE-2026-47634

EUVD

EUVD-2026-35577

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	sharepoint_server	2019
microsoft	sharepoint_server	to 16.0.19725.20384 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-74	The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.
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) 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 authorized attacker can exploit this flaw to perform spoofing attacks over a network.

Impact Analysis

This vulnerability can allow an authorized attacker to perform spoofing attacks over a network. Spoofing can lead to impersonation of legitimate users or services, potentially causing unauthorized actions or misleading users.

According to the CVSS score of 7.3, the impact includes high confidentiality and integrity impacts, meaning sensitive information could be exposed or altered, but it does not affect availability.

Mitigation Strategies

This vulnerability involves improper neutralization of input during web page generation in Microsoft Office SharePoint, which allows an authorized attacker to perform spoofing over a network.

To mitigate this vulnerability, it is recommended to apply the security updates provided by Microsoft as soon as they become available.

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