MongoDB Server Auth Bypass via Aggregation View Privilege Bypass
CVE-2026-120825 Published on November 10, 2026
Improper Authorization in MongoDB Server Aggregation Framework View Definition Validation Leads to Unauthorized Collection Access
An authorization weakness in the aggregation framework of MongoDB Server may allow an authenticated user holding only basic database privileges to read the contents of collections in a database for which they have not been granted read access. The privilege evaluation performed while a view definition is validated does not cover a nested portion of the supplied pipeline, so the resulting view returns data the user is otherwise refused. This may result in unintended access to data, including stored authentication material.
Vulnerability Analysis
CVE-2026-120825 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. Public availability of a proof of concept (POC) exploit exists for CVE-2026-120825. 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-2026-120825 has been classified to as an AuthZ vulnerability or weakness.
Products Associated with CVE-2026-120825
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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.