---
cve: "CVE-2026-44005"
severity: "CRITICAL"
cvss: 10.0
epss: "83%"
vendor: "patriksimek"
kev: false
exploited: false
published: "2026-05-13 18:16:17"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T06:43:57+02:00"
---

# CVE-2026-44005

> 10.0 CRITICAL · 🧪 PoC

## Beschreibung

vm2 is an open source vm/sandbox for Node.js. From 3.9.6 to 3.10.5, vm2's bridge exposes mutable proxies for real host-realm intrinsic prototypes and then forwards sandbox writes into the underlying host objects with otherReflectSet() and otherReflectDefineProperty(), which lets attacker-controlled JavaScript running in a default VM or inherited NodeVM mutate shared host Object.prototype, Array.prototype, and Function.prototype from inside the sandbox This vulnerability is fixed in 3.11.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- fca270df73b64a88e2f9ce71ac17663b6eaf814e (Commit)

## Referenzen

- <https://github.com/patriksimek/vm2/security/advisories/GHSA-vwrp-x96c-mhwq>
- <https://access.redhat.com/errata/RHSA-2026:50850>
- <https://access.redhat.com/security/cve/CVE-2026-44005>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2477205>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44005.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-44005) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_