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CVE-2026-42400

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CVE-2026-42400

Published: May 28, 2026

Modified: May 29, 2026

PUBLISHED

CVSS v3.1

6.5

MEDIUM

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.

VendorProductVersions

Elastic

Kibana

affected
9.4.0 - <= 9.4.1
affected
9.0.0 - <= 9.3.4
affected
8.0.0 - <= 8.19.15

Weaknesses (CWE)

CWE-400

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

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