# CVE-2026-8063: Post-auth null pointer dereference when aggregating against a view with empty search pipeline

CVE-2026-8063 is fixed in MongoDB on 1 platform by MongoDB 8.2.7 (version 8.2.7), released March 31, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-8063
- Priority: High
- CVSS: 7.1
- EPSS: 0.0023
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 7, 2026
- Weakness: CWE-476: NULL Pointer Dereference
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-8063

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | MongoDB | 8.2.7 | [MongoDB 8.2.7](https://patchblox.com/security/data/fix/windows-app/mongodb.server-8.2.7.md) | Mar 31, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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