CVE-2026-114643 Duplicate geometry fields via unvalidated GeoJSON extra members
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-114643?
CVE-2026-114643 is a medium-severity vulnerability in MongoDB C# Driver, published on 22 Oct 2026.
Official 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.
Weakness: CWE-694
Which versions are affected by CVE-2026-114643?
How do I fix CVE-2026-114643?
No fix has been published for CVE-2026-114643 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-114643 being exploited?
There is no known exploitation of CVE-2026-114643 in the wild and no public exploit code.
Sources
Also known as GHSA-mqvm-xxqr-vqw5.