CVE-2026-102409: Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

Published Oct 6, 2026

Updated

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).

Affected Software

1 affected component

Elastic Elasticsearch

Event History

Oct 6, 2026

CVE Published

via MITRE·07:31 PM

Data Sourced

via MITRE·07:31 PM

DescriptionSeverityWeakness

Data Sourced

via NVD·08:17 PM

DescriptionSeverityWeakness

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

An attacker must be authenticated to Elasticsearch and have low privileges. No user interaction is required.

What is the expected impact if exploitation succeeds?

Exploitation can terminate an Elasticsearch node, causing a denial of service. The provided severity vector indicates no confidentiality or integrity impact.

CVE-2026-102409: Uncontrolled Recursion in Elasticsearch Leading to Denial of Service

Affected Software

Event History

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

What is the expected impact if exploitation succeeds?

Company

Resources

Contact

Frequently Asked Questions

What level of access does an attacker need to exploit this issue?

What is the expected impact if exploitation succeeds?