CVE-2026-63144 – Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

CVE ID :CVE-2026-63144

Published : July 21, 2026, 11:18 p.m. | 27 minutes ago

Description :Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to denial of service via a specially crafted search request submitted by a low-privileged authenticated user. A user with read-level index access can submit a request that triggers unbounded recursive processing within the Elasticsearch query evaluation component, causing a fatal error that terminates the affected node. In single-node deployments, this results in complete service outage; in multi-node clusters, it causes repeated node restarts and sustained availability degradation.

Severity: 6.5 | MEDIUM

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