A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different target than intended. This can result in limited unauthorized read and write access to data belonging to another logical tenant of the affected application.

Project Subscriptions

Vendors Products
Mongodb Subscribe
C\# Driver Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 28 Aug 2026 07:45:00 +0000

Type Values Removed Values Added
First Time appeared Mongodb
Mongodb c\# Driver
Vendors & Products Mongodb
Mongodb c\# Driver

Thu, 27 Aug 2026 18:00:00 +0000

Type Values Removed Values Added
Description A weakness in the MongoDB C++ Driver's handling of caller-supplied namespace identifiers allows special characters embedded in those identifiers. An application that builds a namespace identifier from untrusted input without validating it may therefore have its operation directed at a different target than intended. This can result in limited unauthorized read and write access to data belonging to another logical tenant of the affected application.
Title Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver
Weaknesses CWE-116
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: mongodb

Published:

Updated: 2026-08-28T15:51:46.407Z

Reserved: 2026-08-26T22:13:42.143Z

Link: CVE-2026-81522

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-27T20:18:50.493

Modified: 2026-08-28T21:16:15.740

Link: CVE-2026-81522

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T15:30:08Z

Weaknesses