What is CVE-2026-47644?

CVE-2026-47644 is a security advisory published by Microsoft Security Response Center (MSRC) with Critical severity. Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Which CVE IDs does CVE-2026-47644 cover?

CVE-2026-47644 covers the following CVE IDs: CVE-2026-47644. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2026-47644?

CVE-2026-47644 has a CVSS v3 base score of 6.5, published by Microsoft Security Response Center (MSRC).

Which products are affected by CVE-2026-47644?

CVE-2026-47644 affects 1 product, including: Copilot Chat (Microsoft Edge).

CVE-2026-47644CriticalCVSS 6.5

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Vendor

Microsoft Security Response Center (MSRC)

Published

June 4, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2026-47644 →

📋 Description

Improper neutralization of special elements in output used by a downstream component ('injection') in Copilot Chat (Microsoft Edge) allows an unauthorized attacker to disclose information over a network.

🎯 Affected products1

Copilot Chat (Microsoft Edge)

🔗 References (1)

advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644