MEDIUMUnknown

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremel

An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremely large, non-terminated field name to the builder, the library may read memory outside the intended buffer and terminate the calling process. No authentication is required, but the calling application must pass the oversized name in a specific form.

CVE-2026-84966Published 2 days agoSource: Ubuntu

Affected packages

  • mongo-cxx-driver

Exploit signal

Known exploited (CISA KEV)
No
EPSS score
EPSS percentile

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Recommended response stack

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An incorrect numeric type conversion in the BSON document building component of the MongoDB C++ Driver may cause a length value to be interpreted incorrectly. When an application supplies an extremel | HackTribune