CVE-2026-63261

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). 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.

References (1)

Core 1

Core References

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

Scores

CVSS v3 6.5

EPSS 0.0024

EPSS Percentile 14.6%

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 9.0.0 - 9.3.7

Elastic/Kibana 9.4.0 - 9.4.3

Published Jul 21, 2026

Tracked Since Jul 22, 2026