CVE-2026-63136

published 2026-07-21

CVE-2026-63136: Uncontrolled Resource Consumption (CWE-400) in Elasticsearch can lead to denial of service via Excessive Allocation (CAPEC-130). A user with search privileges…

Priority P3 35 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
elastic	elasticsearch	>= 8.0.0 < 8.19.15	8.19.15
elastic	elasticsearch	8.0.0 – 8.19.14	—
elastic	elasticsearch	>= 9.0.0 < 9.2.9	9.2.9
elastic	elasticsearch	9.0.0 – 9.2.8	—
elastic	elasticsearch	>= 9.3.0 < 9.3.4	9.3.4
elastic	elasticsearch	9.3.0 – 9.3.3	—

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CWE-400