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CVE-2026-63136

nvd nist
Published: Jul 21, 2026Modified: Aug 7, 2026

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6.5
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Exploitability: 2.8 / Impact: 3.6
Source: security@elastic.co (Secondary)

Description

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.

Affected (3)

Elastic
1 product
Elasticsearch
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Elastic
Elasticsearch
From 8.0.0 to 8.19.15
Elasticsearch
From 9.0.0 to 9.2.9
Elasticsearch
From 9.3.0 to 9.3.4

Related CWEs

CWE-400
Uncontrolled Resource Consumption
The product 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.

References (1)

Source: security@elastic.co
Vendor Advisory

Timeline

No history available yet.