What is CVE-2026-106430?

CVE-2026-106430 is a medium-severity vulnerability in MongoDB C++ Driver, classified under CWE-436. CVSS score: 5.9/10. Published 2026-10-08.

How severe is CVE-2026-106430?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in MongoDB C++ Driver

CVE-2026-106430

The MongoDB C++ Driver discards content after an embedded NUL byte in certain field and collection names accepted by the collection API. This can cause the driver and the calling application to interpret the same name differently. An authenticated actor who can influence a name passed by an affected application can cause the application to read distinct values from an unintended field or rename an unintended collection. These operations use the application's existing database credentials.

Published 2026-10-08 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

MongoDB C++ Driver

Weakness classification (CWE)

CWE-436

References

Frequently asked questions

What is CVE-2026-106430?: CVE-2026-106430 is a medium-severity vulnerability in MongoDB C++ Driver, classified under CWE-436. CVSS score: 5.9/10. Published 2026-10-08.
How severe is CVE-2026-106430?: Medium severity. CVSS v3 base score is 5.9 out of 10.