CVE-2026-6231 | MongoDB C Driver up to 1.30.4/2.0.1 bson_validate input validation

VDB-357188 · CVE-2026-6231 · GCVE-0-2026-6231 MONGODB C DRIVER UP TO 1.30.4/2.0.1 BSON_VALIDATE INPUT VALIDATION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.2 $0-$5k 2.55+ Summaryinfo A vulnerability was found in MongoDB C Driver up to 1.30.4/2.0.1. It has been declared as problematic. The impacted element is the function bson_validate. Such manipulation leads to input validation. This vulnerability is listed as CVE-2026-6231. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component. Detailsinfo A vulnerability was found in MongoDB C Driver up to 1.30.4/2.0.1 and classified as problematic. Affected by this issue is the function bson_validate. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is integrity. CVE summarizes: 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 The advisory is shared for download at jira.mongodb.org. This vulnerability is handled as CVE-2026-6231 since 04/13/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. Upgrading to version 1.30.5 or 2.0.2 eliminates this vulnerability. Productinfo Type Database Software Vendor MongoDB Name C Driver Version 1.30.0 1.30.1 1.30.2 1.30.3 1.30.4 2.0.0 2.0.1 License open-source CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.2 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 4.3 CNA Vector (mongodb): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Input validation CWE: CWE-20 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: C Driver 1.30.5/2.0.2 Timelineinfo 04/13/2026 Advisory disclosed 04/13/2026 +0 days CVE reserved 04/13/2026 +0 days VulDB entry created 04/13/2026 +0 days VulDB entry last update Sourcesinfo Advisory: jira.mongodb.org Status: Confirmed CVE: CVE-2026-6231 (🔒) GCVE (CVE): GCVE-0-2026-6231 GCVE (VulDB): GCVE-100-357188 Entryinfo Created: 04/13/2026 18:38 Changes: 04/13/2026 18:38 (76) Complete: 🔍 Cache ID: 99:477:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸