CVE-2026-114644

Memory-exhaustion denial of service via unbounded symbol interning during BSON/JSON deserialization

MEDIUM
5.9
CVSS Score
Published: October 22, 2026 at 07:13 PM UTC
Updated: October 23, 2026 at 07:45 PM UTC
1 product affected across 1 vendorC++ Driver

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Severity
MEDIUM5.9
Exploit prediction
EPSS 0.5%

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

5.9MEDIUMmongodb
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-770

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