---
id: CVE-2026-88034
title: >-
  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 iden…
summary: >-
  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 iden…
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'
cwe:
  - CWE-943
vendor: mongodb
product: c++_driver
affected:
  - 'c++_driver >= 3.2.0, < 4.5.2'
patched:
  - c++_driver 4.5.2
published: '2026-09-10'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T18:00:36.920'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-88034'
references:
  - url: 'https://jira.mongodb.org/browse/CXX-3556'
    label: cna@mongodb.com
tags:
  - nvd
  - cve.org
epss: 0.00455
epssPercentile: 0.36888
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-10T18:30:06.799921Z'
ingestedAt: '2026-09-11T16:45:48.026Z'
---

## Overview

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.

## Affected

- `c++_driver >= 3.2.0, < 4.5.2`

## Remediation

Upgrade past the affected range:

- `c++_driver 4.5.2`