Medium 5.4Published Oct 22, 2026

CVE-2026-114643Duplicate geometry fields via unvalidated GeoJSON extra members

Updated under an hour ago (Oct 26, 2026, 3:50 PM ET)

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It affects MongoDB C# Driver. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for MongoDB C# Driver

Exploited in the last 30 days

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: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Weakness (CWE): CWE-694
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mongodb
NVD analysis: Awaiting Analysis
Record last updated: Oct 22, 2026
First seen by InfoSec Signals: Oct 22, 2026

Affected products

Affected products

MongoDB C# Driver mongodb:c_driver (from the name)	from 1.8.0 before 3.13.0	CNA record

References

References

https://jira.mongodb.org/browse/CSHARP-6179
https://github.com/mongodb/mongo-csharp-driver/releases/tag/v3.13.0
https://github.com/mongodb/mongo-csharp-driver/security/advisories/GHSA-mqvm-xxqr-vqw5

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.