CVE-2026-47645

Url redirection to untrusted site ('open redirect') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to elevate privileges over a network.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47645	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:365_copilot:-:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Redirección de URL a sitio no confiable (’redirección abierta’) en el Chat Empresarial de Microsoft 365 Copilot permite a un atacante no autorizado elevar privilegios sobre una red.

Information

Published : 2026-06-19 21:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-47645

Mitre link : CVE-2026-47645

CVE.ORG link : CVE-2026-47645

JSON object : View

Products Affected

microsoft

365_copilot

CWE

CWE-601

URL Redirection to Untrusted Site ('Open Redirect')

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