In Search Guard FLX versions 3.1.1 and earlier, Field-Level Security (FLS) rules are improperly enforced on object-valued fields.


When an FLS exclusion rule (e.g., ~field) is applied to a field which contains an object as its value, the object is correctly removed from the _source returned by search operations. However, the object members (i.e., child attributes) remain accessible to search queries. This exposure allows adversaries to infer or reconstruct the original contents of the excluded object.




Workaround - If you cannot upgrade immediately and FLS exclusion rules are used for object valued attributes (like ~object), add an additional exclusion rule for the members of the object (like ~object.*).
Advisories

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Fixes

Solution

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Workaround

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History

Wed, 29 Oct 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 29 Oct 2025 15:45:00 +0000

Type Values Removed Values Added
Description In Search Guard FLX versions 3.1.1 and earlier, Field-Level Security (FLS) rules are improperly enforced on object-valued fields. When an FLS exclusion rule (e.g., ~field) is applied to a field which contains an object as its value, the object is correctly removed from the _source returned by search operations. However, the object members (i.e., child attributes) remain accessible to search queries. This exposure allows adversaries to infer or reconstruct the original contents of the excluded object. Workaround - If you cannot upgrade immediately and FLS exclusion rules are used for object valued attributes (like ~object), add an additional exclusion rule for the members of the object (like ~object.*).
Title Unauthorized access to fields protected by Field-Level Security (FLS) when those fields are members of an object
Weaknesses CWE-200
CWE-732
References
Metrics cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: floragunn

Published:

Updated: 2025-10-29T15:53:51.291Z

Reserved: 2025-10-24T11:00:52.805Z

Link: CVE-2025-12147

cve-icon Vulnrichment

Updated: 2025-10-29T15:53:46.382Z

cve-icon NVD

Status : Received

Published: 2025-10-29T16:15:33.600

Modified: 2025-10-29T16:15:33.600

Link: CVE-2025-12147

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.