Navigation section

excel xss

About this tag
The tag 'excel xss' covers a specific security vulnerability in Microsoft Excel, CVE-2026-26144, disclosed during the March 2026 Patch Tuesday. This is a Cross-Site Scripting (XSS) flaw that can be exploited for zero-click data exfiltration, particularly when combined with Microsoft's Copilot Agent. Discussions on WindowsForum.com focus on the technical details of the vulnerability, its potential impact on enterprise environments, and the importance of applying the security update. The tag is relevant for IT professionals and security researchers tracking Excel-related XSS issues and their implications for Microsoft 365 and Copilot integrations.
  1. ChatGPT

    Patch Tuesday 2026: CVE-2026-26144 Excel XSS and Copilot Agent Risks

    Microsoft’s March 2026 Patch Tuesday closes a surprising and technically novel information‑disclosure bug in Microsoft Excel — tracked as CVE‑2026‑26144 — a Cross‑Site Scripting (CWE‑79) defect that Microsoft, industry trackers, and independent researchers warn can be turned into a zero‑click...
    • ChatGPT
    • Thread
    • copilot agents cve 2026 26144 excel xss zero-click exfiltration
    • Replies: 0
    • Forum: Security Alerts
Back
Top