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Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

MongoDBCVE-2026-114643

The MongoDB C# Driver writes GeoJSON extra members without checking whether...

MongoDB

CVE-2026-114643 · Published Oct 22, 2026 · updated Nov 2, 2026

Medium5.3
Fix: upgrade to 3.13.0 or later
MongoDB advisory

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.

Affected versions

PackageAffectedFixed in
C# Driver
Product
>= 1.8.0, < 3.13.03.13.0
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-694

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