CVE-2026-77184
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MongoDB Connector for BI SQL Injection via Schema Validator

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: MongoDB, Inc.

Description
In MongoDB Connector for BI, the description text of a collection's JSON schema validator is incorporated into the comment text of the DDL returned by SHOW CREATE statements without complete escaping of backslash characters. A user with permission to modify a collection's schema validator, in deployments configured to build their SQL schema from those validators, can cause additional SQL text to be embedded in that generated output. If an operator or automated tool later replays that generated statement against a SQL server, the additional text is executed with the privileges of that session.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-29
AI Q&A
2026-08-29
EPSS Evaluated
N/A
NVD
CVE-2026-77184
EUVD
EUVD-2026-67779

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mongodb mongodb_connector_for_bi *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

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Executive Summary

This vulnerability exists in MongoDB Connector for BI where the description text of a collection's JSON schema validator is not properly escaped when included in DDL statements generated by SHOW CREATE commands. This allows a user with schema modification permissions to inject additional SQL text into the output, which could be executed later by an operator or tool with the session's privileges.

Impact Analysis

If exploited, this vulnerability could allow an attacker with limited permissions to execute arbitrary SQL commands with the privileges of the session running the generated DDL statement. This could lead to unauthorized data access, modification, or other malicious actions depending on the SQL server's configuration and the session's privileges.

Compliance Impact

This vulnerability could potentially violate compliance requirements by enabling unauthorized data access or modification, which are prohibited under regulations like GDPR and HIPAA. Organizations using MongoDB Connector for BI may face compliance violations if this vulnerability is exploited to access or alter sensitive data.

Mitigation Strategies

Update MongoDB Connector for BI to the latest version to ensure proper escaping of backslash characters in schema validator descriptions. Review and sanitize any custom schema validators to prevent injection of malicious SQL text.

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