Bug 2547125 (CVE-2026-103006)

Summary: CVE-2026-103006 elasticsearch: Elasticsearch: Denial of Service via deeply nested search aggregations
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: doconnor
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Elasticsearch. An authenticated remote user with read access can trigger excessive recursion by submitting a specially crafted search request with deeply nested aggregations. Processing this request exhausts server resources and causes the affected node to crash, resulting in a Denial of Service (DoS) that requires manual intervention to restore service.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On: 2547868, 2547869, 2547870, 2547871, 2547872, 2547873    
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Description OSIDB Bzimport 2026-10-06 19:55:52 UTC 
Uncontrolled Recursion (CWE-674) in Elasticsearch can lead to Denial of Service via a specially crafted, deeply nested request submitted to the aggregation feature of the search API. Elasticsearch contains an uncontrolled recursion weakness in its search aggregation processing. An authenticated user with read access to a single index can submit a specially crafted request containing deeply nested aggregation definitions. Processing this request triggers unbounded recursive execution that exhausts the server process's available resources, causing the affected node to terminate. The node does not recover automatically and requires manual intervention to restore service.