CVE-2026-26939

Missing Authorization (CWE-862) in Kibana’s server-side Detection Rule Management can lead to Unauthorized Endpoint Response Action Configuration (host isolation, process termination, and process suspension) via CAPEC-1 (Accessing Functionality Not Properly Constrained by ACLs). This requires an authenticated attacker with rule management privileges.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana::::::::
	cpe:2.3:a:elastic:kibana:9.3.0:::::::*

History

17 Jun 2026, 10:26

Type	Values Removed	Values Added
Summary		(es) Autorización Faltante (CWE-862) en la Gestión de Reglas de Detección del lado del servidor de Kibana puede llevar a la Configuración de Acciones de Respuesta de Punto Final No Autorizada (aislamiento de host, terminación de proceso y suspensión de proceso) a través de CAPEC-1 (Acceso a Funcionalidad No Restringida Adecuadamente por ACLs). Esto requiere un atacante autenticado con privilegios de gestión de reglas.

23 Mar 2026, 13:36

Type	Values Removed	Values Added
First Time		Elastic Elastic kibana
CPE		cpe:2.3:a:elastic:kibana:::::::: cpe:2.3:a:elastic:kibana:9.3.0:::::::*
References	~~() https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530 -~~	() https://discuss.elastic.co/t/kibana-8-19-12-9-2-6-9-3-1-security-update-esa-2026-19/385530 - Vendor Advisory

19 Mar 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-19 18:16

Updated : 2026-06-17 10:26

NVD link : CVE-2026-26939

Mitre link : CVE-2026-26939

CVE.ORG link : CVE-2026-26939

JSON object : View

Products Affected

elastic

kibana

CWE

CWE-862

Missing Authorization

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