Description
The MongoDB Entity Framework Core provider does not neutralize special elements in values passed to SetProperty when an ExecuteUpdate call also contains a setter that reads the entity being updated. In that case the update is sent as an aggregation pipeline, and a caller-supplied string beginning with $ is evaluated as an expression rather than stored as data. A party who can influence such a value may modify or remove fields in the records being updated, or copy other fields of the same record into them.
Published: 2026-11-03
Score: 2.3 Low
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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References
Link Providers
https://jira.mongodb.org/browse/EF-478 cve-icon cve-icon
History

Wed, 04 Nov 2026 16:45:00 +0000

Type Values Removed Values Added
Description The MongoDB Entity Framework Core provider does not neutralize special elements when it places a caller-supplied value into a bulk update that is expressed as a databasea result, a value supplied as plain data may be interpreted by the database as expression syntax. A part value through normal application input may causeunintended modification of fields in the records the application is updating, and may cause data already held in those records to be relocated into other fields of the same record. The MongoDB Entity Framework Core provider does not neutralize special elements in values passed to SetProperty when an ExecuteUpdate call also contains a setter that reads the entity being updated. In that case the update is sent as an aggregation pipeline, and a caller-supplied string beginning with $ is evaluated as an expression rather than stored as data. A party who can influence such a value may modify or remove fields in the records being updated, or copy other fields of the same record into them.
Title ExecuteUpdate may evaluate caller-supplied values as MongoDB expressions EF Core provider: pipeline-form ExecuteUpdate evaluates a user string setter as a $-field reference

Tue, 03 Nov 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb entity Framework Core Provider
Vendors & Products Mongodb
Mongodb entity Framework Core Provider

Tue, 03 Nov 2026 19:45:00 +0000

Type Values Removed Values Added
Description The MongoDB Entity Framework Core provider does not neutralize special elements when it places a caller-supplied value into a bulk update that is expressed as a databasea result, a value supplied as plain data may be interpreted by the database as expression syntax. A part value through normal application input may causeunintended modification of fields in the records the application is updating, and may cause data already held in those records to be relocated into other fields of the same record.
Title ExecuteUpdate may evaluate caller-supplied values as MongoDB expressions
Weaknesses CWE-943
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N'}

Subscriptions

Mongodb Entity Framework Core Provider
cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-11-04T16:30:53.153Z

Reserved: 2026-11-02T16:36:20.651Z

Link: CVE-2026-120567

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-03T20:18:12.137

Modified: 2026-11-04T17:17:35.210

Link: CVE-2026-120567

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-03T21:00:04Z

Weaknesses