CVE-2026-63136

EUVD-2026-46404
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
elasticCNA
6.5 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
elasticelasticsearch
8.0.0 ≤
𝑥
≤ 8.19.14
CNA
elasticelasticsearch
9.3.0 ≤
𝑥
≤ 9.3.3
CNA
elasticelasticsearch
9.0.0 ≤
𝑥
≤ 9.2.8
CNA
Common Weakness Enumeration
References
https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559