Vulnerabilities CVE-2026-42400

CVE-2026-42400

Medium

Open

TLP:CLEAR

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

NVD CVE.org

DDoS

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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.

Details

CVSS Score: 6.5
EPSS Score ⓘ: 0.33%

26.1th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Confidence: 90%
Published: May 28, 2026
Last Modified: May 28, 2026

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