medium5.1
CVE-2026-84965
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 operat…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mongodb | C Driver | from 1.10.0 before 1.30.9 from 2.0.0 before 2.5.2 |