CVE-2026-84969
Fixed in a distro release EPSS <1%CVSS 3.7
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.
Products: mongodb c_driver
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Debian 13 | mongo-c-driver | no fix |
| Debian 14 | mongo-c-driver | 2.5.2-1 |
| Ubuntu 26.04 LTS | mongo-c-driver | no fix |
| Ubuntu 26.10 | mongo-c-driver | no fix |
| Ubuntu Pro 20.04 LTS | mongo-c-driver | no fix |
| Ubuntu Pro 22.04 LTS | mongo-c-driver | no fix |
| Ubuntu Pro 24.04 LTS | mongo-c-driver | no fix |
| openSUSE Tumbleweed | mongo-c-driver | 2.5.2-1.1 |