CVE-2026-42400

CVSS Score & Metrics

Base Score

6.5 / 10

Vector String

                                        CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H                                    

Vulnerability Description

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.

Vulnerability Details

Published Date

May 28, 2026

Last Modified

June 01, 2026

CWE ID

CWE-400

Source

NVD

Vendor

Elastic

Product

Kibana

External References

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

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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