Kibana Authenticated DoS via Excessive Allocation in Automatic Import
CVE-2026-33459 Published on April 8, 2026
Uncontrolled Resource Consumption in Kibana Leading to Denial of Service
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.
Vulnerability Analysis
CVE-2026-33459 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Resource Exhaustion Vulnerability?
The software does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
CVE-2026-33459 has been classified to as a Resource Exhaustion vulnerability or weakness.
Products Associated with CVE-2026-33459
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Affected Versions
Elastic Kibana:- Version 9.3.0, <= 9.3.2 is affected.
- Version 8.15.0, <= 8.19.13 is affected.
- Version 9.0.0, <= 9.2.7 is affected.