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CVE-2026-114647 Details

Description

The MongoDB C# Driver does not reject replacement documents whose top-level field names begin with a dollar sign in FindOneAndReplace, unlike other replace operations. An application that builds such a document from user-supplied field names can have the server apply update operators instead of a full replacement. The effect is limited to the document matched by the application's own filter, whose contents can be modified in ways the application did not intend.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624m-mxj3	CISA-ADP
https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0	[email protected]
https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624m-mxj3	[email protected]
https://jira.mongodb.org/browse/CSHARP-6186	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-943	Improper Neutralization of Special Elements in Data Query Logic	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

Date	Action	Recorded By
Nov 2, 2026	CVE Modified	CISA-ADP
Oct 22, 2026	CVE Modified	[email protected]
Oct 22, 2026	New CVE Received	[email protected]