CVE-2026-49094

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 user with viewer-level access can submit a request containing an oversized input value to an analytics collections management endpoint. Kibana will consume excessive CPU and memory resources while processing the request. This results in Kibana becoming unavailable to all users until the service is manually recovered.

References (1)

Core 1

Core References

https://discuss.elastic.co/t/kibana-8-19-16-security-update-esa-2026-39/386561/1

Scores

CVSS v3 6.5

EPSS 0.0024

EPSS Percentile 14.8%

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 (2)

Elastic/Kibana 8.0.0 - 8.19.15

elastic/kibana 8.0.0 - 8.19.16

Published May 28, 2026

Tracked Since May 29, 2026