CVE-2026-106438

An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.

CVSS v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/CDRIVER-6419	Vendor Advisory Issue Tracking

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mongodb:c_driver::::::mongodb::*
	cpe:2.3:a:mongodb:c_driver::::::mongodb::*

History

27 Oct 2026, 19:49

Type	Values Removed	Values Added
CPE		cpe:2.3:a:mongodb:c_driver::::::mongodb::*
First Time		Mongodb c Driver Mongodb
References	~~() https://jira.mongodb.org/browse/CDRIVER-6419 -~~	() https://jira.mongodb.org/browse/CDRIVER-6419 - Vendor Advisory, Issue Tracking

08 Oct 2026, 19:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 19:16

Updated : 2026-10-27 19:49

NVD link : CVE-2026-106438

Mitre link : CVE-2026-106438

CVE.ORG link : CVE-2026-106438

JSON object : View

Products Affected

mongodb

c_driver

CWE

CWE-682

Incorrect Calculation

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