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 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.
- Score
- CVSS 3.1 6.5 Medium
- Status
- Analyzed - security@elastic.co
- Published
- 2026-07-21
- Last modified
- 2026-10-24
- Weaknesses
- CWE-400
Affected products
References
- https://discuss.elastic.co/t/elasticsearch-8-19-15-9-2-9-9-3-4-security-update-esa-2026-60/388559
