Missing authorization in Kibana - CVE-2026-26939
Published: March 19, 2026
Vulnerability identifier: #VU124150
CSH Severity: Low
CVSS v4: 2.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N]
CVE-ID: CVE-2026-26939
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass authorization checks.
The vulnerability exists due to missing authorization checks in the server-side detection rule management feature. A remote user with rule management privileges can modify configuration of endpoint response action such as host isolation, process termination, and process suspension.
Affected software
Kibana
How to mitigate CVE-2026-26939
Install updates from vendor's website.
Kibana - addressed in versions 8.19.12, 9.2.6, 9.3.1