What is CVE-2026-18698?

CVE-2026-18698 is a medium-severity vulnerability in Mongodb Server, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-08-11.

How severe is CVE-2026-18698?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Mongodb Server

CVE-2026-18698

An issue in MongoDB Server could allow an authenticated user with a limited database-scoped role to perform an action against protected system collections that should require more specific privileges. This could result in exposure of colle…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Mongodb Server — versions 8.3.0, 8.0, 7.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cna@mongodb.com

Frequently asked questions

What is CVE-2026-18698?: CVE-2026-18698 is a medium-severity vulnerability in Mongodb Server, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-08-11.
How severe is CVE-2026-18698?: Medium severity. CVSS v3 base score is 5.4 out of 10.