CVE-2026-114650

A flaw in the client-side encryption support of the MongoDB .NET/C# driver can cause data designated for client-side field-level encryption to be written without encryption. Under certain platform text-encoding configurations, an internal name conversion loses information, so the encryption layer fails to associate the operation with its configured encryption rules and the operation proceeds without an error being raised. An application user with the ability to write data through an affected application can therefore have sensitive fields persisted in plaintext, defeating the confidentiality guarantee that client-side encryption is intended to provide. No integrity or availability impact was observed.

CVSS v3 5.9 MEDIUM

5.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

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-jvpx-6w8x-h6rg
https://jira.mongodb.org/browse/CSHARP-6180

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-jvpx-6w8x-h6rg -

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-2026-114650

Mitre link : CVE-2026-114650

CVE.ORG link : CVE-2026-114650

JSON object : View

Products Affected

No product.

CWE

CWE-838

Inappropriate Encoding for Output Context

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