CVE-2026-106438 [MEDIUM] – An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept c

An incorrect calculation in Decimal128 string parsing in the MongoDB C Driver can accept certain over-precision inputs containing leading zeros instead of rejecting them. This produces a value different from the supplied text. An actor who can provide a decimal string to an embedding application, including through Extended JSON parsing, can cause the application to store or use an incorrect numeric value.