CVE-2026-42400 MEDIUM

CVE-2026-42400: Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

Vendor Elastic
Product Kibana
Weakness CWE-400
Published May 28, 2026
Last update May 29, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
May 29, 2026 Record updated