CVE-2026-42399CWE-400denial-of-service

CVE-2026-42399

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 low-privileged user can cause Kibana to consume exponentially increasing amounts of memory by submitting a specially crafted Timelion visualization expression containing deeply chained function calls. The resulting data structure grows without bound, exhausting available memory and causing the Kibana service to crash and become unavailable to all users.

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 (2)
ProductVersionsFixed in
elastic/kibana≥ 8.0.0, < 8.19.168.19.16
elastic/kibana≥ 9.0.0, < 9.3.59.3.5
References (1)
https://discuss.elastic.co/t/kibana-8-19-16-and-9-3-5-security-update-esa-2026-36/386556 · [email protected]
EPSS history
Timeline
  • 28 MAY 19:44Z
    Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
    cvelistv5