CVE-2026-84963

CVE-2026-84963 affects the JSON-to-BSON parser in the MongoDB C Driver's BSON library . The root cause is an unchecked int cast of huge JSON string values, causing an incorrect numeric conversion that silently shortens unusually large text values or omits the corresponding field entirely—while th...

Silent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parser

An incorrect numeric conversion in the JSON parsing component of the MongoDB C Driver's BSON library may cause an unusually large text value to be silently shortened, or the corresponding field to be omitted, while the parsing operation still reports success and returns no error. An unauthenticat...

CVE-2026-84963 Silent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parser

An incorrect numeric conversion in the JSON parsing component of the MongoDB C Driver's BSON library may cause an unusually large text value to be silently shortened, or the corresponding field to be omitted, while the parsing operation still reports success and returns no error. An unauthenticat...

CVE-2026-84963 Silent field truncation via unchecked int cast of huge JSON string values in JSON-to-BSON parser

An incorrect numeric conversion in the JSON parsing component of the MongoDB C Driver's BSON library may cause an unusually large text value to be silently shortened, or the corresponding field to be omitted, while the parsing operation still reports success and returns no error. An unauthenticat...