CVE-2026-84965

Fixed in a distro release EPSS <1%CVSS 5.1

An integer wraparound in an allocation size calculation in the BSON library's JSON parsing code can cause a buffer to be released while a following copy operation still writes through the stale pointer. On builds where sizes are 32 bits, an unauthenticated party able to supply a sufficiently large JSON input to an application that links the library may cause that application to terminate unexpectedly, resulting in denial of service.

Published 2026-09-03 · CVE record · OSV

Products: mongodb c_driver

Distro releases