CVE-2026-63136: CWE-400 Uncontrolled Resource Consumption in Elastic Elasticsearch
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.
CVE-2026-63136: CWE-400 Uncontrolled Resource Consumption in Elastic Elasticsearch
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.
CVSS v3.1
Score 6.5medium
Affected software
pkg:maven/org.elasticsearch/elasticsearchRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- elastic
- Date Reserved
- 2026-07-15T18:23:57.165Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5fdc239c2644c7f8ba04d1
Added to database: 07/21/2026, 20:52:51 UTC
Last enriched: 07/21/2026, 21:07:49 UTC
Last updated: 07/31/2026, 19:24:51 UTC
Views: 37
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