---
cve: "CVE-2026-8336"
severity: "HIGH"
cvss: 7.7
epss: "26%"
vendor: "MongoDB, Inc."
kev: false
exploited: false
published: "2026-05-13 04:17:42"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T18:37:40+02:00"
---

# CVE-2026-8336

> 7.7 HIGH

## Beschreibung

After invoking $_internalJsEmit, which is not intended to be directly accessible, or mapreduce command’s map function in a certain way, an authenticated user can subsequently crash mongod when the server-side JavaScript engine (through $where, $function, mapreduce reduce stage, etc.) is used also in a specific way, resulting in a post-authentication denial-of-service.

This issue impacts MongoDB Server v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/AU:N/R:A/V:D/RE:M/U:Red
```

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

## Patch verfügbar (OSV)

- 551096db8ad4a951af553de51c5485d5fd91d40d (Commit)
- c531abff36f228c5ff24735ddf31a23536716ab0 (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/SERVER-121610>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-8336) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_