CVE-2026-6231

The bson_validate function may return early on specific inputs and incorrectly report success. This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. The issue may affect applications that rely on these functions to validate untrusted BSON data before further processing. This issue affects MongoDB C Driver versions prior to 1.30.5, MongoDB C Driver version 2.0.0 and MongoDB C Driver version 2.0.1

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://jira.mongodb.org/browse/CDRIVER-6017	Issue Tracking Patch

Configurations

Configuration 1 (hide)

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

History

26 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) La función bson_validate puede retornar prematuramente con entradas específicas e informar incorrectamente éxito. Este comportamiento podría resultar en omitir la validación para datos BSON, permitiendo que secuencias UTF-8 malformadas o inválidas eludan la validación y sean procesadas incorrectamente. El problema puede afectar a aplicaciones que dependen de estas funciones para validar datos BSON no confiables antes de un procesamiento posterior. Este problema afecta a las versiones del controlador C de MongoDB anteriores a la 1.30.5, la versión 2.0.0 del controlador C de MongoDB y la versión 2.0.1 del controlador C de MongoDB.

Information

Published : 2026-04-13 16:16

Updated : 2026-10-26 22:10

NVD link : CVE-2026-6231

Mitre link : CVE-2026-6231

CVE.ORG link : CVE-2026-6231

JSON object : View

Products Affected

mongodb

c_driver

CWE

CWE-20

Improper Input Validation

NVD-CWE-noinfo

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This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. The issue may affect applications that rely on these functions to validate untrusted BSON data before further processing. This issue affects MongoDB C Driver versions prior to 1.30.5, MongoDB C Driver version 2.0.0 and MongoDB C Driver version 2.0.1"}, {"lang": "es", "value": "La funci\u00f3n bson_validate puede retornar prematuramente con entradas espec\u00edficas e informar incorrectamente \u00e9xito. Este comportamiento podr\u00eda resultar en omitir la validaci\u00f3n para datos BSON, permitiendo que secuencias UTF-8 malformadas o inv\u00e1lidas eludan la validaci\u00f3n y sean procesadas incorrectamente. El problema puede afectar a aplicaciones que dependen de estas funciones para validar datos BSON no confiables antes de un procesamiento posterior. Este problema afecta a las versiones del controlador C de MongoDB anteriores a la 1.30.5, la versi\u00f3n 2.0.0 del controlador C de MongoDB y la versi\u00f3n 2.0.1 del controlador C de MongoDB."}], "lastModified": "2026-10-26T22:10:00.163", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*", "vulnerable": true, "matchCriteriaId": "FC01B4CD-2834-4398-9C1D-4D3778EF30C8", "versionEndExcluding": "1.30.5"}, {"criteria": "cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*", "vulnerable": true, "matchCriteriaId": "05A27596-6E2C-433C-ACED-1543B88842C0", "versionEndExcluding": "2.0.2", "versionStartIncluding": "2.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "cna@mongodb.com"}