CVE-2026-42398

Server-Side Request Forgery (CWE-918) in Kibana allows authenticated users with connector management privileges to bypass the operator-configured connection allowlist. By configuring a Webhook connector with a crafted target, an attacker can cause Kibana to issue outbound requests to destinations that the egress restriction controls were intended to block.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://discuss.elastic.co/t/kibana-9-2-8-and-9-3-2-security-update-esa-2026-37/386557	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::

History

14 Oct 2026, 20:10

Type	Values Removed	Values Added
Summary		(es) Falsificación de petición del lado del servidor (CWE-918) en Kibana permite a usuarios autenticados con privilegios de gestión de conectores eludir la lista de permitidos de conexión configurada por el operador. Al configurar un conector Webhook con un objetivo manipulado, un atacante puede hacer que Kibana emita peticiones salientes a destinos que los controles de restricción de salida estaban destinados a bloquear.

Information

Published : 2026-05-28 21:16

Updated : 2026-10-14 20:10

NVD link : CVE-2026-42398

Mitre link : CVE-2026-42398

CVE.ORG link : CVE-2026-42398

JSON object : View

Products Affected

elastic

kibana

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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