---
id: CVE-2026-18705
title: >-
  An issue in MongoDB Server's Atlas Vector Search feature could allow an
  authenticated user with read access to one view to retrieve documents from a
  different, protected view over the same underlying collection
summary: >-
  An issue in MongoDB Server's Atlas Vector Search feature could allow an
  authenticated user with read access to one view to retrieve documents from a
  different, protected view over the same underlying collection. This is due to
  insufficie…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-807
vendor: mongodb
product: mongodb
affected:
  - 'mongodb >= 7.0.0, < 7.0.40'
  - 'mongodb >= 8.0.0, < 8.0.29'
  - 'mongodb >= 8.2.0, <= 8.2.12'
  - 'mongodb >= 8.3.0, < 8.3.8'
  - mongodb = 9.0.0
  - mongodb = 9.1.0
patched:
  - mongodb 8.3.8
published: '2026-08-11'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T15:19:18.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18705'
references:
  - url: 'https://jira.mongodb.org/browse/SERVER-129618'
    label: cna@mongodb.com
tags:
  - nvd
epss: 0.00264
epssPercentile: 0.18644
ingestedAt: '2026-08-29T19:41:16.080Z'
---

## Overview

An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process.

## Affected

- `mongodb >= 7.0.0, < 7.0.40`
- `mongodb >= 8.0.0, < 8.0.29`
- `mongodb >= 8.2.0, <= 8.2.12`
- `mongodb >= 8.3.0, < 8.3.8`
- `mongodb = 9.0.0`
- `mongodb = 9.1.0`

## Remediation

Upgrade past the affected range:

- `mongodb 8.3.8`