CVE-2026-47644

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Published Jun 4, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Microsoft copilot Chat
CPEs cpe:2.3:a:microsoft:copilot_chat:-:*:*:*:*:microsoft_edge:*:*
Vendors & Products Microsoft copilot Chat
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft copilot Chat Edge
Weaknesses CWE-74
CPEs cpe:2.3:a:microsoft:copilot_chat_edge:*:*:*:*:*:*:*:*
Vendors & Products Microsoft
Microsoft copilot Chat Edge
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
microsoft
Published
Updated
Nov 10, 2026, 11:23 PM
Reserved
May 19, 2026, 8:12 PM
Status
Analyzed
Published
Jun 4, 2026, 11:17 PM
Modified
Jul 23, 2026, 7:10 AM