CVE-2026-42400CWE-400denial-of-service

CVE-2026-42400

Medium · published May 29, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
39.8
In the wild
Unconfirmed
What it is

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00472 · 39.8th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-05-29T01:16Z
Affected products (3)
ProductVersionsFixed in
elastic/kibana≥ 8.0.0, < 8.19.168.19.16
elastic/kibana≥ 9.0.0, < 9.3.59.3.5
elastic/kibana≥ 9.4.0, < 9.4.29.4.2
References (1)
https://discuss.elastic.co/t/kibana-8-19-16-9-3-5-9-4-2-security-update-esa-2026-35/386554 · [email protected]
EPSS history
Timeline
  • 28 MAY 19:42Z
    Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
    cvelistv5