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CVE-2026-63263

MEDIUM
6.5
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-63263
State
PUBLISHED
Assigner
elastic
Reserved
2026-07-16 03:26 UTC
Published
2026-07-21 23:10 UTC
Last updated
2026-07-21 23:10 UTC
Primary CWE
CWE-400
CWE-400 Uncontrolled Resource Consumption
Vendor / Product
Elastic / Elasticsearch
Sources
cve.org  ·  NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected products (1)
VendorProductPlatformVersions
Elastic Elasticsearch — 9.4.0 ≤ 9.4.3, 9.0.0 ≤ 9.3.7, 8.0.0 ≤ 8.19.18
Weakness (CWE)
CWESourceDescription
CWE-400 cna CWE-400 Uncontrolled Resource Consumption
CVSS scores (1)
ScoreSeverityVersionSourceVector
6.5 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References (1)
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