---
id: CVE-2026-119675
title: mongorestore may bypass collection guards through a system.buckets prefix
summary: >-
  MongoDB Database Tools mongorestore inconsistently handles the system.buckets.
  prefix when validating collection names in an untrusted dump. A specially
  crafted collection name can bypass special-collection guards and operator
  namespace …
severity: high
cvss: 8.6
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-706
vendor: MongoDB
product: Database Tools
affected:
  - database_tools >= 100.4.0 < 100.20.1
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-11-03T17:45:26.007147Z'
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T17:45:37.053Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119675'
references:
  - url: 'https://github.com/mongodb/mongo-tools/blob/master/CHANGELOG.md'
tags:
  - cve.org
epss: 0.00174
epssPercentile: 0.06896
ingestedAt: '2026-11-05T20:33:06.331Z'
---

## Overview

MongoDB Database Tools mongorestore inconsistently handles the system.buckets. prefix when validating collection names in an untrusted dump. A specially crafted collection name can bypass special-collection guards and operator namespace filters, causing a restore to create an unauthorized user-chosen database account, including an account with the root role. Exploitation requires an operator to restore unauthorized user-controlled data using credentials with sufficient user-management privileges on the destination deployment. Excluding the admin namespace alone does not prevent this behavior. This issue affects MongoDB Database Tools versions 100.4.0 through versions before 100.20.1.

## Affected

- `database_tools >= 100.4.0 < 100.20.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.