What is CVE-2026-94400?

CVE-2026-94400 is a medium-severity vulnerability in Elastic Kibana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-26.

How severe is CVE-2026-94400?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Elastic Kibana

CVE-2026-94400

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead denial of service via Excessive Allocation (CAPEC-130)

Vulnerability class: DoS (Denial of Service)

Published 2026-09-26 · last modified 2026-09-29.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.002 (16.4th percentile), scored 2026-11-11.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 16.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.002 · change: -0.002

Affected products

Elastic Kibana

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

discuss.elastic.co/t/kibana-8-19-22-9-4-7-9-5-3-security-update-esa-2026-181/39… (Vendor Advisory)

Frequently asked questions

What is CVE-2026-94400?: CVE-2026-94400 is a medium-severity vulnerability in Elastic Kibana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-26.
How severe is CVE-2026-94400?: Medium severity. CVSS v3 base score is 6.5 out of 10.