CVE-2026-102411

Allocation of Resources Without Limits or Throttling (CWE-770) in Elasticsearch can lead to Denial of Service via Excessive Allocation (CAPEC-130). Elasticsearch enforces a size limit on the user-supplied metadata field for each individual template resource, but does not limit the total memory used when multiple such resources are retrieved together. A user holding the *manage_index_templates* cluster privilege can register multiple resources each within the individual limit. Retrieving them together materializes all of their metadata values in memory at once, exhausting available heap and causing the affected node to fail with an out-of-memory error, resulting in a denial of service.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://discuss.elastic.co/t/elasticsearch-9-4-7-9-5-3-8-19-23-security-update-esa-2026-192/390865	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:elastic:elasticsearch::::::::
	cpe:2.3:a:elastic:elasticsearch::::::::
	cpe:2.3:a:elastic:elasticsearch::::::::

History

09 Oct 2026, 15:49

Type	Values Removed	Values Added
First Time		Elastic elasticsearch Elastic
CPE		cpe:2.3:a:elastic:elasticsearch::::::::
References	~~() https://discuss.elastic.co/t/elasticsearch-9-4-7-9-5-3-8-19-23-security-update-esa-2026-192/390865 -~~	() https://discuss.elastic.co/t/elasticsearch-9-4-7-9-5-3-8-19-23-security-update-esa-2026-192/390865 - Vendor Advisory

06 Oct 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-06 20:17

Updated : 2026-10-09 15:49

NVD link : CVE-2026-102411

Mitre link : CVE-2026-102411

CVE.ORG link : CVE-2026-102411

JSON object : View

Products Affected

elastic

elasticsearch

CWE

CWE-770

Allocation of Resources Without Limits or Throttling

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