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CVE WatchJul 21, 2026

CVE-2026-63136

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with

CVSS

6.5

Medium

EPSS

KEV

Exploit Today

0

0-100

Published: Jul 21, 2026 · Last modified: Jul 21, 2026 · CWE-400

EPSS · 30d

Not enough EPSS history yet.

Technical description

Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges can submit a specially crafted search request that causes a data node to exhaust available heap memory, resulting in node unavailability and cluster degradation. An attacker could leverage this vulnerability to cause cluster downtime requiring manual intervention to restore service.

Official references
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