CVE-2026-47644: Microsoft Copilot Chat

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

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 products

• Microsoft Copilot Chat: affected versions not specified

Published 2026-06-04. Last modified 2026-07-23.