#VU124151 Resource exhaustion in Kibana - CVE-2026-26940
Published: March 19, 2026
Vulnerability identifier: #VU124151
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-26940
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Kibana
Kibana
Software vendor:
Elastic Stack
Elastic Stack
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources in the Timelion visualization plugin. A remote user can pass a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.