SB20261007241 - Uncontrolled Recursion in Elasticsearch

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Main Vulnerability Database SB20261007241

SB20261007241 - Uncontrolled Recursion in Elasticsearch

Published: October 7, 2026

Security Bulletin ID SB20261007241
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Uncontrolled Recursion (CVE-ID: CVE-2026-103006)

CWE-ID: CWE-674 - Uncontrolled Recursion

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause a denial of service.

The vulnerability exists due to uncontrolled recursion in Elasticsearch's search aggregation processing when processing deeply nested aggregation definitions. A remote user can submit a specially crafted request to the aggregation feature of the search API to cause a denial of service.

Exploitation requires read access to a single index. All configurations are affected, and the vulnerable functionality is enabled by default.


Remediation

Install update from vendor's website.

References