CVE-2026-42400

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.

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 NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-2-security-update-esa-2026-35/386554	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::::::::

History

No history.

Information

Published : 2026-05-28 21:16

Updated : 2026-06-17 10:47

NVD link : CVE-2026-42400

Mitre link : CVE-2026-42400

CVE.ORG link : CVE-2026-42400

JSON object : View

Products Affected

elastic

kibana

CWE

CWE-400

Uncontrolled Resource Consumption

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