CVE-2026-8063
Post-auth null pointer dereference when aggregating against a view with empty search pipeline
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
An authenticated user can crash mongod when running $rankFusion or $scoreFusion with an empty pipeline on a view. When resolving a view, the server inspects the aggregation pipeline to determine whether it begins with an Atlas Search stage. For $rankFusion and $scoreFusion, this inspection reads the first element on each stage’s input pipeline array without first verifying that the array is non-empty. Supplying an empty pipeline causes a null pointer dereference and crashes the server. This issue affects MongoDB Server 8.2 versions prior to 8.2.7.
| CWE | CWE-476 |
| Vendor | mongodb inc. |
| Product | mongodb server |
| Published | May 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB Inc. / MongoDB Server
8.2.0 < 8.2.7
References
Credits
Xint Code by Theori