CVE-2026-84969

LowCVSS 3.7/10Last modified Sep 10, 2026

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.

Metrics

CVSS 3.1 3.7/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-787

Affected software

No affected versions have been published.

Timeline

Published: Sep 3, 2026
Last modified: Sep 10, 2026
NVD status: Analyzed

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