CVE-2026-8063
mediumpriority · track · 0EPSS 0.002 · 14 %ileDEEUUSEPSS · scored 2026-10-29
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.9–7.1
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (9)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1404MongoDB: Schwachstelle ermöglicht Denial of ServiceDeutsch2026-05-06csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in MongoDB ausnutzen, um einen Denial of Service Angriff durchzuführen.
- BIT-mongodb-2026-8063Post-auth null pointer dereference when aggregating against a view with empty search pipeline2026-05-12vendor · osvUS
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.
also known as (3)
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sources
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references (4)
External citations — patches, advisories, analysis.
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