CVE-2026-120823: MongoDB Server Auth Bypass in Aggregation Framework
CVE-2026-120823 Published on November 10, 2026
Missing Authorization Check in MongoDB Server Aggregation Framework Leads to Unauthorized Access to Deployment-Wide Configuration Data
A missing authorization check in the aggregation framework of MongoDB Server may allow a user holding any valid credentials, including an account with no assigned roles, to read deployment-wide query configuration data that is otherwise restricted to a cluster-level privilege. This may result in unintended access to configuration and schema information.
Vulnerability Analysis
CVE-2026-120823 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
What is an AuthZ Vulnerability?
The software does not perform an authorization check when an actor attempts to access a resource or perform an action.
CVE-2026-120823 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-120823
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Affected Versions
MongoDB Server:- Version 9.0.0 and below 9.0.7 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.