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CVE-2026-6231

5.3 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · mongodbNVD modified 2026-10-26 22:10

Affected (CPE criteria) 1

  • cpe:2.3:a:mongodb:c_driver:*:*:*:*:*:mongodb:*:*

References 1