CVE-2026-72666 Authorization Bypass Through User-Controlled Key in Kibana Leading to Unauthorized Query Execution on Managed Hosts
An attacker with limited space access can execute Osquery queries on hosts in other spaces, leading to unauthorized data disclosure.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72666?
CVE-2026-72666 is a medium-severity missing authorization vulnerability in Elastic Kibana, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-72666?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | From 9.1.0 | 9.4.5 |
elk Bitnami | From 9.1.0 | 9.4.5 |
Products include Elastic Kibana.
How do I fix CVE-2026-72666?
Upgrade kibana to 9.4.5 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72666 being exploited?
There is no known exploitation of CVE-2026-72666 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-72666, BIT-kibana-2026-72666, GHSA-jxv5-g6wh-9v24, MINI-452m-hpq7-626v, MINI-5p3c-qmcj-86jm, MINI-8jfw-7gj4-wph5 and 1 more.