Is CVE-2026-6231 actively exploited?

No active exploitation of CVE-2026-6231 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-6231 be exploited remotely?

Yes. CVE-2026-6231 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-6231?

CVE-2026-6231 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-6231

CWE-20Published: April 13, 2026· Updated: Apr 17, 2026

4.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.8th

Official Description

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

NVD Source

Technical Analysis

CVE-2026-6231 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.