Auth bypass in Elastic Kibana

CVE-2026-78597

Missing Authorization (CWE-862) in the Kibana Entity Store feature can lead to unauthorized credential creation via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user holding only low-privilege Security feature access could invoke an administrative operation that creates and persists Elasticsearch API keys under the caller's identity, bypassing the elevated cluster and Kibana privileges that the documented Entity Store setup flow requires.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-78597?
CVE-2026-78597 is a medium-severity vulnerability in Elastic Kibana, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-09-01.
How severe is CVE-2026-78597?
Medium severity. CVSS v3 base score is 4.3 out of 10.