---
cve: "CVE-2026-8063"
severity: "HIGH"
cvss: 7.1
epss: "0.2%"
vendor: "MongoDB Inc."
kev: false
exploited: false
published: "2026-05-07 04:12:54"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T12:43:19+02:00"
---

# CVE-2026-8063

> 7.1 HIGH

## Beschreibung

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-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 9fbea53313e85fbbf864a963ff17b0bd6dafa0be (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/SERVER-121851>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-8063) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_