CVE-2026-72666: Elastic Kibana

Medium severity, CVSS 6.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Authorization Bypass Through User-Controlled Key (CWE-639) in Kibana can lead to unauthorized query execution against Elastic Agents that are assigned to a Kibana space the requesting user has no access to, via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). A user who is authorized to run Osquery live queries in one space can have a query carried out on hosts belonging to another space, resulting in disclosure of information from those hosts to the Osquery results data stream.

Affected products

• Elastic Kibana: from 9.1.0, before 9.4.5 (fixed in 9.4.5)

Published 2026-08-13. Last modified 2026-09-02.