CVE-2026-47644: CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') in Microsoft Copilot Chat (Microsoft Edge)
CVE-2026-47644 is a medium severity vulnerability in Microsoft Copilot Chat within Microsoft Edge, involving improper neutralization of special elements in output used by a downstream component, classified as an injection issue (CWE-74). This flaw allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6. 5, indicating a moderate impact primarily on confidentiality. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47644) affects Microsoft Copilot Chat in Microsoft Edge and is caused by improper neutralization of special elements in output consumed by a downstream component, leading to an injection flaw (CWE-74). Exploitation can result in unauthorized information disclosure over a network. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, high confidentiality impact, no integrity or availability impact, and an official fix is available. Microsoft has published an advisory with an official patch to remediate this vulnerability.
Potential Impact
The vulnerability allows unauthorized attackers to disclose sensitive information over a network, impacting confidentiality. There is no reported impact on integrity or availability. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch as detailed in 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
CVE-2026-47644 is a medium severity vulnerability in Microsoft Copilot Chat within Microsoft Edge, involving improper neutralization of special elements in output used by a downstream component, classified as an injection issue (CWE-74). This flaw allows an unauthorized attacker to disclose information over a network. The vulnerability has a CVSS score of 6. 5, indicating a moderate impact primarily on confidentiality. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47644) affects Microsoft Copilot Chat in Microsoft Edge and is caused by improper neutralization of special elements in output consumed by a downstream component, leading to an injection flaw (CWE-74). Exploitation can result in unauthorized information disclosure over a network. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, unchanged scope, high confidentiality impact, no integrity or availability impact, and an official fix is available. Microsoft has published an advisory with an official patch to remediate this vulnerability.
Potential Impact
The vulnerability allows unauthorized attackers to disclose sensitive information over a network, impacting confidentiality. There is no reported impact on integrity or availability. No known exploits are currently in the wild.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the provided patch as detailed in 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: 6/4/2026, 10:48:37 PM
Last enriched: 6/4/2026, 11:04:14 PM
Last updated: 6/4/2026, 11:50:17 PM
Views: 4
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