CVE-2026-88034
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Improper Data Query Handling in MongoDB C++ Driver GridFS

Publication date: 2026-09-10

Last updated on: 2026-09-10

Assigner: MongoDB, Inc.

Description
Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB C++ Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influence the identifier passed by an affected application may obtain stored file content beyond the intended target or cause all GridFS file chunks in the affected bucket to be removed, rendering stored file content unreadable.

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Meta Information

Published
2026-09-10
Last Modified
2026-09-10
Generated
2026-09-10
AI Q&A
2026-09-10
EPSS Evaluated
N/A
NVD
CVE-2026-88034
EUVD
EUVD-2026-75670

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mongodb mongodb_c++_driver *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-943 The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.

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Executive Summary

This vulnerability involves improper handling of special elements in data query logic within MongoDB's GridFS component of the C++ Driver. It allows an authenticated user to manipulate a structured file identifier so that it is treated as a query condition instead of a literal identifier. This can lead to unauthorized access to stored file content beyond the intended target or deletion of all GridFS file chunks in a bucket, making stored content unreadable.

Impact Analysis

If exploited, this vulnerability could allow an attacker with authenticated access to read sensitive data stored in GridFS that they should not have access to. It could also result in permanent data loss by deleting all file chunks in a GridFS bucket, making stored files unreadable.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection principles and HIPAA's security and privacy requirements. It may result in data breaches, unauthorized disclosures, and potential non-compliance with regulations mandating strict access controls and data integrity.

Mitigation Strategies

Update the MongoDB C++ Driver to the latest version that patches this vulnerability. Review applications using GridFS to ensure file identifiers are properly validated and not interpreted as query conditions. Restrict authenticated user permissions to minimize potential impact.

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