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CVE PROGRAM SOURCE RECORD5.1 Medium

CVE-2026-106438

Silent Decimal128 value corruption via incorrect exactness check in MongoDB C Driver

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Status
Published
Published
Updated
Assigning organization
mongodb

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MongoDB C Driver

Default version status: unaffected

  • 1.4.0 to < 1.30.13affected
  • 2.0.0 to < 2.5.6affected

References