Bug 2566051 (CVE-2026-115298)

Summary: CVE-2026-115298 elasticsearch: Elasticsearch: Information disclosure via field-level security bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Elasticsearch. An authenticated user can bypass access controls to view restricted data, leading to information disclosure. Certain search and query operations fail to enforce field-level security—which restricts access to specific data fields within an index—on constant keyword fields. As a result, users can retrieve field values that their assigned roles are not permitted to access.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2567249, 2567250    
Bug Blocks:    

Description OSIDB Bzimport 2026-11-03 18:03:59 UTC 
Incorrect Authorization (CWE-863) in Elasticsearch can lead to information disclosure via Accessing Functionality Not Properly Constrained by ACLs (CAPEC-1). An authenticated user whose index access is restricted by field-level security can retrieve the value of a constant_keyword field that their role excludes. Some search and query features do not apply the field-level security restriction to this field type.