CVE-2026-63259 Authorization Bypass Through User-Controlled Key in Kibana Leading to Information Disclosure
Attackers can access unauthorized scheduled query results in Kibana Spaces by manipulating user-controlled keys, leading to information 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-2026-63259?
CVE-2026-63259 is a medium-severity missing authorization vulnerability in Elastic Kibana, published on 21 Jul 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 information disclosure via user-supplied identifiers that reference scheduled query result data from Kibana Spaces the requester is not authorized to access.
Weakness: CWE-639
Which versions are affected by CVE-2026-63259?
2 open source packages ship an affected version, including kibana and elk. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
kibana Bitnami | From 9.4.0 | 9.4.4 |
elk Bitnami | From 9.4.0 | 9.4.4 |
Products include Elastic Kibana.
How do I fix CVE-2026-63259?
Upgrade kibana to 9.4.4 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-63259 being exploited?
There is no known exploitation of CVE-2026-63259 in the wild and no public exploit code.
Other vulnerabilities in Elastic Kibana
Sources
Also known as BIT-elk-2026-63259, BIT-kibana-2026-63259, GHSA-vv4j-vm47-33w3, MINI-3rcj-pw92-3vv8.