CVE-2026-63139

MEDIUM

Uncontrolled Resource Consumption in Kibana Leading to Denial of Service

Title source: cna

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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 6.5

EPSS 0.0026

EPSS Percentile 18.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-400

Status published

Products (3)

Elastic/Kibana 8.0.0 - 8.19.18

Elastic/Kibana 9.3.0 - 9.3.7

Elastic/Kibana 9.4.0 - 9.4.3

Published Jul 21, 2026

Tracked Since Jul 22, 2026