CVE-2026-47644 in Copilot Chat

Summary

by MITRE • 06/05/2026

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.

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• Responsible: Microsoft
• Reservation: 05/19/2026
• Disclosure: 06/05/2026
• Moderation: accepted
• Entry: VDB-368416
• CPE: ready
• CWE: CWE-74 (confirmed)
• CVSS: 6.5 (CNA)
• EPSS: 0.00000
• KEV: no
• Activities: low
• Sector: Lawfirm, Chemical, ...

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-47644
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-47644
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-47644/