Information Disclosure Vulnerability in Microsoft Edge Copilot Chat
CVE-2026-47644

6.5MEDIUM

Key Information:

Vendor

Microsoft
Status
Copilot Chat (microsoft Edge)
Vendor
CVE Published:
4 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-47644?

An information disclosure vulnerability exists in the Copilot Chat feature of Microsoft Edge due to improper neutralization of special elements in output, allowing unauthorized attackers to potentially disclose sensitive information over a network.

Affected Version(s)

Copilot Chat (Microsoft Edge) -

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-47644
Created by songjianyang

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.