CVE-2026-6231

| EUVD-2026-22023 MEDIUM
2026-04-13 mongodb GHSA-q869-m422-4qcv
Authentication Bypass
5.3
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/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
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
patch_available
Apr 16, 2026 - 05:29 EUVD
2.0.2,1.30.5
Analysis Generated
Apr 13, 2026 - 16:43 vuln.today
CVSS Changed
Apr 13, 2026 - 16:22 NVD
4.3 (MEDIUM) 5.3 (MEDIUM)

DescriptionNVD

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

AnalysisAI

MongoDB C Driver bson_validate function returns early on specific inputs and incorrectly reports successful validation, allowing malformed or invalid UTF-8 sequences in BSON data to bypass validation checks. This affects MongoDB C Driver versions prior to 1.30.5, 2.0.0, and 2.0.1, and impacts applications that depend on this validation function to process untrusted BSON data. …

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CVE-2026-6231 vulnerability details – vuln.today
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