CVE-2026-63139

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 15, 2026

Description

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated low-privileged user can exploit an uncontrolled resource consumption vulnerability in Kibana's Canvas functionality by sending a specially crafted request, causing the Kibana server process to terminate and resulting in a denial of service for all users of the affected Kibana instance.

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 9.3.0 through 9.3.7Affected

References

https://discuss.elastic.co/t/kibana-8-19-19-9-3-8-9-4-4-security-update-esa-2026-63/388560

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.