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CVE-2026-63263

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 6.5 · elasticNVD modified 2026-10-24 17:10

Affected (CPE criteria) 1

  • cpe:2.3:a:elastic:elasticsearch:*:*:*:*:*:*:*:*

References 1