CVE-2026-114643: CWE-694: Use of Multiple Resources with Duplicate Identifier in MongoDB C# Driver
Description
The MongoDB C# Driver writes GeoJSON extra members without checking whether their names collide with reserved GeoJSON members such as type and coordinates. An application that places user-supplied field names into these extra members can store documents with duplicate geometry fields, so the server and the driver resolve different values for the same record. Affected records can also become unreadable through the driver, interrupting application code that reads them.
CVSS v4.0
Score 5.3medium
Affected software
MongoDB
C# Driver
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-10-21T21:57:37.697Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ada649d4d27ba8daa755e39
Added to database: 10/22/2026, 19:31:41 UTC
Last updated: 10/22/2026, 19:31:41 UTC
Views: 3
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