CVE-2026-42397

MEDIUM

Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service

Title source: cna

Description

Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user can submit a specially crafted request to affected Entity Analytics endpoints containing an oversized input value that causes excessive resource consumption, which may render Kibana unavailable.

References (1)

Core 1

Core References

https://discuss.elastic.co/t/kibana-9-3-7-9-4-4-security-update-esa-2026-55/388554/1

Scores

CVSS v3 6.5

EPSS 0.0029

EPSS Percentile 21.2%

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-770

Status published

Products (2)

Elastic/Kibana 9.3.0 - 9.3.6

Elastic/Kibana 9.4.0 - 9.4.3

Published Jul 21, 2026

Tracked Since Jul 22, 2026