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CVE-2026-106430

Query and rename target confusion via embedded NUL truncation in MongoDB C++ Driver

The MongoDB C++ Driver discards content after an embedded NUL byte in certain field and collection names accepted by the collection API. This can cause the driver and the calling application to interpret the same name differently. An authenticated actor who can influence a name passed by an affected application can cause the application to read distinct values from an unintended field or rename an unintended collection. These operations use the application's existing database credentials.

CVSS 4.0 · 6 Medium EPSS < 1% KEV · Not listed
Vendors
Mongodb
Products
C++ Driver
CVE-2026-84966

BSON element injection via NUL-embedded document keys in builder append

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.

CVSS 4.0 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Mongodb
Products
C++ Driver C\+\+ Driver
CVE-2026-88034

GridFS data disclosure and deletion via query-operator injection in file IDs in the MongoDB C++ Driver

Improper neutralization of special elements in data query logic in the GridFS component of the MongoDB C++ Driver can cause a caller-supplied structured file identifier to be interpreted as a query condition rather than as a literal identifier. An authenticated user who can influence the identifier passed by an affected application may obtain stored file content beyond the intended target or cause all GridFS file chunks in the affected bucket to be removed, rendering stored file content unreadable.

CVSS 4.0 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Mongodb
Products
C++ Driver C\+\+ Driver