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CVE-2026-63263

nvd nist
Published: Jul 22, 2026Modified: Aug 3, 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 Exponential Data Expansion (CAPEC-197). An authenticated user may submit a specially crafted query to the ES|QL engine that causes exponential CPU consumption during query evaluation. Because the resource exhaustion persists beyond query completion, repeated requests can fully exhaust the available query worker resources, rendering ES|QL queries unavailable until the node is restarted.

Affected (3)

Elastic
1 product
Elasticsearch
Configuration A
3 vulnerable
Vulnerable SoftwareAffected Versions
Elastic
Elasticsearch
From 8.0.0 to 8.19.19
Elasticsearch
From 9.0.0 to 9.3.8
Elasticsearch
From 9.4.0 to 9.4.4

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.