CVE-2026-26144
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Microsoft 365 Apps
PublishedMar 10, 2026
First seenMar 10, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft 365_apps | No range specified | — |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
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