Bug 2547105 (CVE-2026-102409)

Summary: CVE-2026-102409 elasticsearch: Elasticsearch: Denial of Service via uncontrolled recursion
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 user with low privileges can cause a Denial of Service (DoS) by triggering excessive resource allocation through uncontrolled recursive operations. This issue causes the affected Elasticsearch node to terminate unexpectedly, disrupting service availability.
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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: 2547880, 2547881, 2547882    
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Description OSIDB Bzimport 2026-10-06 19:52:47 UTC
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).