Bug 2547103 (CVE-2026-103007)

Summary: CVE-2026-103007 elasticsearch: Elasticsearch: Privilege escalation via improper enforcement of delegated role permissions
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Elasticsearch. An authorization flaw in delegated role-management permissions allows an authenticated user with delegated administrative access to escalate privileges. Because authorization checks fail to strictly enforce index scoping restrictions, a user with this privilege can modify their assigned role to access restricted data, potentially gaining full administrative control of the cluster.
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Description OSIDB Bzimport 2026-10-06 19:52:33 UTC 
Incorrect Authorization (CWE-863) in Elasticsearch can lead to Privilege Escalation via a delegated administrative privilege whose scope is not fully enforced during authorization checks. Elasticsearch contains an incorrect authorization weakness in a configurable, non-default privilege that lets an administrator delegate limited role-management capability to another user, scoped to specific indices. The authorization check that enforces this scoping does not correctly account for a role-definition setting that can expand the matched index set. A user holding this delegated privilege with a broadly-scoped index pattern can exploit this inconsistency by updating their own assigned role to gain access to indices that should remain restricted, including internal security data. This can enable further escalation up to full administrative control of the cluster.