What is CVE-2026-33459?

CVE-2026-33459 is a medium-severity vulnerability in Elastic Kibana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-04-08.

How severe is CVE-2026-33459?

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

Resource exhaustion in Elastic Kibana

CVE-2026-33459

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with access to the automatic import feature can submit specially crafted requests with excessiv…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.001 (16.7th percentile) — read the EPSS interpretation.

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.

Affected products

Elastic Kibana — versions 9.3.0, 8.15.0, 9.0.0

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

discuss.elastic.co/t/kibana-8-19-14-9-2-8-9-3-3-security-update-esa-2026-26/385…

Frequently asked questions

What is CVE-2026-33459?: CVE-2026-33459 is a medium-severity vulnerability in Elastic Kibana, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-04-08.
How severe is CVE-2026-33459?: Medium severity. CVSS v3 base score is 6.5 out of 10.