🚨 CVE-2026-81522
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.
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GitHub
Release MongoDB C++11 Driver r4.5.1 · mongodb/mongo-cxx-driver
Fixed
Validate database and collection name arguments against "." and NUL bytes. (CVE-2026-81522)
See the full list of changes in Jira.
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August 29, 2026 18
