Auth bypass in MongoDB Server

CVE-2026-82073

A security issue in the MongoDB Server aggregation framework allows an authenticated user with limited read privileges to bypass view-level authorization checks and access data from unauthorized collections when Atlas Search features are in use. The issue stems from insufficient validation of an internal command parameter that can be set by external clients, causing a security check to be improperly skipped.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-82073?
CVE-2026-82073 is a medium-severity vulnerability in MongoDB Server, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-82073?
Medium severity. CVSS v3 base score is 6.5 out of 10.