CVE-2026-26940 MEDIUM

CVE-2026-26940: Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service

Vendor Elastic
Product Kibana
Weakness CWE-1284
Published March 19, 2026
Last update March 19, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value.

Key dates

02Disclosure timeline

March 19, 2026 CVE published
March 19, 2026 Record updated