Kibana Unbounded Memory Allocation Leads to DoS by Low-Priv Auth User
CVE-2026-78586 Published on September 2, 2026
Allocation of Resources Without Limits or Throttling in Kibana Leading to Denial of Service
Allocation of Resources Without Limits or Throttling (CWE-770) in Kibana can lead to a denial of service via Excessive Allocation (CAPEC-130). An authenticated user with low-level privileges could submit a specially crafted request that causes Kibana to consume an unbounded amount of memory, rendering it unavailable to all users.
Vulnerability Analysis
CVE-2026-78586 is exploitable 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
Allocation of Resources Without Limits or Throttling
The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.
Products Associated with CVE-2026-78586
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Affected Versions
Elastic Kibana:- Version 8.0.0, <= 8.19.15 is affected.
- Version 9.0.0, <= 9.3.4 is affected.
- Version 9.4.0, <= 9.4.1 is affected.