PT-2026-46403 · Microsoft · Copilot Chat

Published 2026-06-04 · Updated 2026-06-04 · CVE-2026-47644

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

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.

Fix

Special Elements Injection

Weakness Enumeration

CWE-74

Related Identifiers

CVE-2026-47644

Affected Products

Copilot Chat

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-47644 · Security Note