CVE-2026-33459: Elastic Kibana

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user with access to the automatic import feature can submit specially crafted requests with excessively large input values. When multiple such requests are sent concurrently, the backend services become unstable, resulting in service disruption and deployment unavailability for all users.

Affected products

• Elastic Kibana: from 8.15.0, before 8.19.14 (fixed in 8.19.14); from 9.0.0, before 9.2.8 (fixed in 9.2.8); from 9.3.0, before 9.3.3 (fixed in 9.3.3)

Published 2026-04-08. Last modified 2026-07-24.