CVE-2026-82073: Improper Validation in MongoDB Server Aggregation Framework Allows Authorization Bypass and Unauthorized Collection Access with Atlas Search
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.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
An authenticated user with limited read privileges can exploit it. Atlas Search features must be in use for the described authorization bypass path.
What access could an attacker gain?
The attacker may bypass view-level authorization checks and read data from collections they are not authorized to access. The reported impact is confidentiality only; integrity and availability are not listed as affected.
What does exploitation require?
Exploitation requires network access and low-level authenticated privileges, with no user interaction required. The issue involves an internal aggregation command parameter that external clients can set.