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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.

PUBLISHED Reserved 2026-02-11 | Published 2026-03-10 | Updated 2026-03-13 | Assigner microsoft




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C

Problem types

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

16.0.1 (custom) before https://aka.ms/OfficeSecurityReleases
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26144 (Microsoft Excel Information Disclosure Vulnerability) vendor-advisory patch

cve.org (CVE-2026-26144)

nvd.nist.gov (CVE-2026-26144)

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