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CVE PROGRAM SOURCE RECORD8.6 High

CVE-2026-81522

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

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MongoDB C++ Driver

Default version status: unaffected

  • 3.0.0 to < 4.5.1affected

References