VULNERABILITY INTELLIGENCE

CVE-2026-84969

CVSS score3.7 LOW
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-09-03
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

A memory-handling error in the BSON-to-JSON conversion helpers of the MongoDB C Driver can write a small number of bytes past the end of a heap buffer when a binary field is encoded and the output is cut short at a caller-configured length limit. A party who supplies the document content, with no privileges on the application that links the driver, may cause a small amount of data outside the intended buffer to be altered.

Weakness classification

  • cna@mongodb.com: CWE-787

Primary references