CVE-2026-102409

Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

State: Published
Severity: 6.5 Medium
Published: Oct 6, 2026
Updated: Oct 6, 2026
Reserved: Sep 29, 2026

Description

Uncontrolled Recursion (CWE-674) in Elasticsearch can allow an authenticated user with low privileges to terminate an Elasticsearch node, resulting in denial of service, via Excessive Allocation (CAPEC-130).

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	elastic

Weaknesses

CWE-674 Uncontrolled Recursion

Affected Products

Product	Versions
ElasticsearchElastic	9.2.0 through 9.2.8Affected 9.3.0 through 9.3.8Affected 9.4.0 through 9.4.7Affected 9.5.0 through 9.5.4Affected

References

https://discuss.elastic.co/t/elasticsearch-9-4-8-9-5-5-security-update-esa-2026-190/390863

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