Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0
- https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-68cj-624
- https://jira.mongodb.org/browse/CSHARP-6186
FAQ
What is CVE-2026-114647?
CVE-2026-114647 is a vulnerability with a CVSS score of 4.3 (MEDIUM). 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 ...
How severe is CVE-2026-114647?
CVE-2026-114647 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114647?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.