---
id: CVE-2026-47644
title: Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
summary: >-
  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.
severity: medium
cvss: 6.5
cvssVector: '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'
cvssSource: cna
cwe:
  - CWE-74
vendor: Microsoft
product: Copilot Chat (Microsoft Edge)
affected:
  - copilot_chat_microsoft_edge -
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-06T17:25:28.466532Z'
published: '2026-06-04'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T13:43:29.005Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-47644'
references:
  - url: 'https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644'
    label: Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability
tags:
  - cve.org
epss: 0.00922
epssPercentile: 0.58623
ingestedAt: '2026-09-24T14:44:21.438Z'
---

## Overview

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

- `copilot_chat_microsoft_edge -`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.