CVE-2026-114647

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0
https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624m-mxj3
https://jira.mongodb.org/browse/CSHARP-6186

Configurations

No configuration.

History

22 Oct 2026, 22:18

Type	Values Removed	Values Added
References		() https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624m-mxj3 -

22 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-22 19:17

Updated : 2026-10-23 19:45

NVD link : CVE-2026-114647

Mitre link : CVE-2026-114647

CVE.ORG link : CVE-2026-114647

JSON object : View

Products Affected

No product.

CWE

CWE-943

Improper Neutralization of Special Elements in Data Query Logic

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