CVE-2026-42397 - Vulnerability Details - OpenCVE

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Elastic	Kibana

No data.

No data.

References

Link	Providers
https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554/1

History

Thu, 23 Jul 2026 05:45:00 +0000

Type	Values Removed	Values Added
First Time appeared		Elastic Elastic kibana
Vendors & Products		Elastic Elastic kibana

Wed, 22 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 21 Jul 2026 20:15:00 +0000

Type	Values Removed	Values Added
Description		Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.
Title		Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
Weaknesses		CWE-770
References		https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554/1
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}`

MITRE

Status: PUBLISHED

Assigner: elastic

Published: 2026-07-21T19:40:29.205Z

Updated: 2026-07-22T18:25:52.607Z

Reserved: 2026-04-27T10:14:34.318Z

Link: CVE-2026-42397

Vulnrichment

Updated: 2026-07-22T18:13:53.210Z

NVD

No data.

Redhat

No data.

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