CVE-2026-26144: exploitation status and patch state

CVE-2026-26144 · CVSS 7.5 HIGH · patch available

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.

Is CVE-2026-26144 exploited?

• Not in the CISA KEV catalog.
• Public exploit code: none found in monitored sources.

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

• Click to Run

What PlainSec published about CVE-2026-26144

• Excel XSS Becomes Silent Data Exfiltration Path (2026-04-18)
• Microsoft Issues March Patches for 93 Vulnerabilities (2026-03-12)

Primary sources

• NVD record

What this record does not say

• No EPSS score.
• No affected package data.

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.