CVE-2026-26144
Received Received - Intake

Cross-Site Scripting in Microsoft Excel Enables Network Data Disclosure

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 Excel allows an unauthorized attacker to disclose information over a network.

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Meta Information

Published
2026-03-10
Last Modified
2026-03-13
Generated
2026-07-26
AI Q&A
2026-03-10
EPSS Evaluated
2026-07-25
NVD
CVE-2026-26144
EUVD
EUVD-2026-10701

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
microsoft 365_apps *
microsoft 365_apps *

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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.

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Executive Summary

This vulnerability is an improper neutralization of input during web page generation, also known as cross-site scripting (XSS), in Microsoft Office Excel.

It allows an unauthorized attacker to disclose information over a network by exploiting how Excel processes input when generating web pages.

Detection Guidance

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Impact Analysis

This vulnerability can lead to information disclosure, meaning an attacker could gain access to sensitive information without authorization.

Since the vulnerability can be exploited remotely over a network without user interaction or privileges, it poses a significant security risk.

Compliance Impact

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Mitigation Strategies

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