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Severe, 6 weeks977Projects326

977 severe, 6 weeks · 326 projects

MongoDBCVE-2026-114644

MongoDB C# Driver: resource exhaustion

MongoDB

CVE-2026-114644 · Published Oct 22, 2026 · updated Nov 2, 2026

High8.2
Fix: upgrade to 3.13.0 or later
MongoDB advisory

The MongoDB C# Driver's BSON library contains an uncontrolled resource consumption weakness in its deserialization handling of one BSON value type. An application that deserializes untrusted content with the library retains data derived from that content for the lifetime of the process, with no limit on how much accumulates. An unauthenticated remote party who can cause such content to be deserialized can drive unbounded memory growth, exhausting the host application's available memory and denying service. There is no impact to confidentiality or integrity, and no MongoDB server component is affected.

Affected versions

PackageAffectedFixed in
C# Driver
Product
>= 2.0.0, < 3.13.03.13.0
Details and references
CVSS 4.0
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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-770

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