CVE-2026-47644Network attack vector

Information disclosure via downstream-component injection

Published Jun 4, 2026 · Updated Jun 4, 2026

Injection in Microsoft Copilot Chat in Edge allows remote attackers to disclose information through network-delivered input. Microsoft identifies improper neutralization of special elements in output consumed by a downstream component but has not disclosed the affected locus or transformation. Exploitation requires user interaction, and the documented consequence is information disclosure rather than data modification or service interruption.

CVSS severity6.5
Medium
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Injection in Microsoft Copilot Chat in Edge allows remote attackers to disclose information through network-delivered input. Microsoft identifies improper neutralization of special elements in output consumed by a downstream component but has not disclosed the affected locus or transformation. Exploitation requires user interaction, and the documented consequence is information disclosure rather than data modification or service interruption.

The record

CVE
CVE-2026-47644
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
Microsoft
Product
Copilot Chat in Microsoft Edge
Classifications
CWE-74
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=-

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Microsoft · Copilot Chat in Microsoft Edgeversion=-

Published CVSS scores

6.5Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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