What is CVE-2026-56151?

CVE-2026-56151 is a medium-severity vulnerability in Elastic Kibana, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-07-01.

How severe is CVE-2026-56151?

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

Improper input validation in Elastic Kibana

CVE-2026-56151

Improper Input Validation (CWE-20) in Kibana can lead to a denial of service via Input Data Manipulation (CAPEC-153). An authenticated user can submit a specially crafted Fleet policy input that is not correctly validated, which can render…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

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 9.0.0, 8.0.0, 9.4.0

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security@elastic.co

Frequently asked questions

What is CVE-2026-56151?: CVE-2026-56151 is a medium-severity vulnerability in Elastic Kibana, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2026-07-01.
How severe is CVE-2026-56151?: Medium severity. CVSS v3 base score is 6.5 out of 10.