1. Home
  2. CVE Database
  3. CVE-2026-63136
MEDIUM · 6.5

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 req...

Vulnerability 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 Score

6.5

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
ElasticElasticsearch>= 8.0.0, < 8.19.15

Related Weaknesses (CWE)

CWE-400

References

FAQ

What is CVE-2026-63136?

CVE-2026-63136 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 req...

How severe is CVE-2026-63136?

CVE-2026-63136 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-63136?

Check the references section above for vendor advisories and patch information. Affected products include: Elastic Elasticsearch.