CVE-2026-81522 — Cross-tenant database retargeting via dot/NUL injection in namespace strings in the C++ Driver
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 na…
Published: 2026-08-27 · CVSS: 8.6 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7