Resource exhaustion in Kibana - CVE-2026-33459
Published: April 9, 2026
Vulnerability identifier: #VU125550
CSH Severity: Medium
CVSS v4: 6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33459
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the automatic import feature when handling specially crafted requests with excessively large input values. A remote user can submit concurrent crafted requests to cause a denial of service.
Only deployments with the automatic import plugin enabled are vulnerable.
Affected software
Kibana
How to mitigate CVE-2026-33459
Install security update from vendor's website.
Kibana - addressed in versions 8.19.14, 9.2.8, 9.3.3