Uncontrolled Resource Consumption in Kibana via Excessive Allocation

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Elastic

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.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-21

Last Modified

2026-07-21

Generated

2026-07-22

AI Q&A

2026-07-22

EPSS Evaluated

N/A

NVD

CVE-2026-63139

Affected Vendors & Products

Vendor	Product	Version / Range
elastic	kibana	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-400	The product does not properly control the allocation and maintenance of a limited resource.

Attack-Flow Graph

Executive Summary

This is an uncontrolled resource consumption vulnerability in Kibana's Canvas feature. An authenticated low-privileged user can send a specially crafted request that causes the Kibana server process to terminate, leading to a denial of service for all users of that instance.

Impact Analysis

If exploited, this vulnerability can cause your Kibana server to crash, making it unavailable for all users. This disrupts access to dashboards, data analysis, and other Kibana features until the service is restored.

Mitigation Strategies

Update Kibana to the latest patched version immediately to address the uncontrolled resource consumption vulnerability in Canvas functionality. Restrict user privileges to minimize attack surface and monitor server processes for unexpected terminations.

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