CVE-2026-42400

published 2026-05-28

CVE-2026-42400: Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a…

Priority P3 36 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
elastic	kibana	>= 8.0.0 < 8.19.16	8.19.16
elastic	kibana	8.0.0 – 8.19.15	—
elastic	kibana	>= 9.0.0 < 9.3.5	9.3.5
elastic	kibana	9.0.0 – 9.3.4	—
elastic	kibana	>= 9.4.0 < 9.4.2	9.4.2
elastic	kibana	9.4.0 – 9.4.1	—

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CWE-400