CVE-2026-81522Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://jira.mongodb.org/browse/CXX-3552 Vendor Advisory
• https://github.com/mongodb/mongo-cxx-driver/releases/tag/r4.5.1 Product