CVE-2026-47644: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Microsoft Copilot Chat (Microsoft Edge)
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47644) in Microsoft Copilot Chat (Microsoft Edge) is classified as CWE-74, indicating improper neutralization of special elements in output used by a downstream component, commonly known as an injection flaw. The issue enables an unauthorized attacker to disclose sensitive information over a network. The vulnerability has a CVSS 3.1 base score of 6.5, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high confidentiality impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An unauthorized attacker can exploit this injection vulnerability to disclose sensitive information over a network. The impact is limited to confidentiality without affecting integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch as per the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644 to remediate this vulnerability.
CVE-2026-47644: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Microsoft Copilot Chat (Microsoft Edge)
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.
CVSS v3.1
Score 6.5medium
Affected software
Microsoft
Copilot Chat (Microsoft Edge)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47644) in Microsoft Copilot Chat (Microsoft Edge) is classified as CWE-74, indicating improper neutralization of special elements in output used by a downstream component, commonly known as an injection flaw. The issue enables an unauthorized attacker to disclose sensitive information over a network. The vulnerability has a CVSS 3.1 base score of 6.5, reflecting a medium severity with network attack vector, low attack complexity, no privileges required, user interaction required, and high confidentiality impact. Microsoft has published an official fix for this vulnerability.
Potential Impact
An unauthorized attacker can exploit this injection vulnerability to disclose sensitive information over a network. The impact is limited to confidentiality without affecting integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch as per the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-19T20:12:27.070Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47644","vendor":"Microsoft"}]
Threat ID: 6a2200c5e29bf47b50d9ece7
Added to database: 06/04/2026, 22:48:37 UTC
Last enriched: 08/14/2026, 13:49:23 UTC
Last updated: 09/14/2026, 10:01:31 UTC
Views: 164
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