Skip to content
CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-63263

Uncontrolled Resource Consumption in Elasticsearch Leading to Denial of Service

Read JSON ↗CVE.org ↗
Status
Published
Published
Updated
Assigning organization
elastic

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 products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Elastic Elasticsearch

Default version status: unaffected

  • 9.4.0 to ≤ 9.4.3affected
  • 9.0.0 to ≤ 9.3.7affected
  • 8.0.0 to ≤ 8.19.18affected

References