CVE-2026-63261

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Jul 21, 2026
Updated: Jul 22, 2026
Reserved: Jul 16, 2026

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). A low-privileged authenticated user can send a specially crafted request to a Kibana machine learning feature, causing the server to exhaust available memory and become unavailable to all users.

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	8.0.0 through 8.19.18Affected 9.4.0 through 9.4.3Affected 9.0.0 through 9.3.7Affected

References

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-72/388575

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