CVE-2026-33464

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: May 28, 2026
Updated: May 29, 2026
Reserved: Mar 20, 2026

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user holding a low-privileged role can submit a specially crafted, oversized payload to an internal Kibana API, causing the Kibana process to exhaust available resources and become unresponsive to all users until the service recovers or is restarted.

Scores

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

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
KibanaElastic	9.4.0 through 9.4.0Affected 9.0.0 through 9.3.4Affected 8.0.0 through 8.19.15Affected

References

https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-1-security-update-esa-2026-32/386548

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