---
id: CVE-2026-18690
title: >-
  An issue in MongoDB Server could allow an authenticated user with a limited
  database-scoped role to perform an action against protected system collections
  that their assigned privileges should not permit
summary: >-
  An issue in MongoDB Server could allow an authenticated user with a limited
  database-scoped role to perform an action against protected system collections
  that their assigned privileges should not permit. This could result in
  critical sy…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H'
cwe:
  - CWE-863
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: '2026-09-16T15:14:48.000'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18690'
references:
  - url: 'https://jira.mongodb.org/browse/SERVER-130481'
    label: cna@mongodb.com
tags:
  - nvd
epss: 0.00253
epssPercentile: 0.17148
ingestedAt: '2026-08-29T19:41:15.482Z'
---

## Overview

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that their assigned privileges should not permit. This could result in critical system collections being dropped and recreated without proper authorization.

## 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`