MongoDB Datatools 100.4.0<100.20.1: mongorestore Bypass UC Guard Root Account Creation
CVE-2026-119675 Published on November 3, 2026
mongorestore may bypass collection guards through a system.buckets prefix
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.
Vulnerability Analysis
CVE-2026-119675 can be exploited with local system access. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Use of Incorrectly-Resolved Name or Reference
The software uses a name or reference to access a resource, but the name/reference resolves to a resource that is outside of the intended control sphere.
Affected Versions
MongoDB Database Tools:- Version 100.4.0 and below 100.20.1 is affected.