CVE-2026-42397 PUBLISHED

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service

Assigner: elastic
Reserved: 27.04.2026 Published: 21.07.2026 Updated: 21.07.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS Score: 6.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Elastic
Product	Kibana
Versions	Default: unaffected affected from 9.4.0 to 9.4.3 (incl.) affected from 9.3.0 to 9.3.6 (incl.)

References

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

Problem Types

CWE-770 Allocation of Resources Without Limits or Throttling CWE

Impacts

CAPEC-130 Excessive Allocation