---
cve: "CVE-2026-73483"
severity: "CRITICAL"
cvss: 9.4
epss: "37%"
vendor: "FlowiseAI"
kev: false
exploited: false
published: "2026-08-13 12:17:23"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T17:53:14+02:00"
---

# CVE-2026-73483

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

Flowise (packages flowise and flowise-components) in versions <= 3.1.2 contain a sandbox escape in the vm2/@flowiseai/nodevm JavaScript sandbox. An authenticated user with access to the /api/v1/node-custom-function endpoint can escape the sandbox by supplying attacker-controlled executablePath and args parameters to puppeteer.launch(), which internally invokes child_process.spawn() outside the sandbox boundary. This allows execution of arbitrary OS commands as the Flowise process user (root in the official Docker image) and arbitrary host file disclosure via Chromium's file:// URL handling. In versions 3.0.8–3.1.2 exploitation requires ALLOW_BUILTIN_DEP=true; earlier versions are exploitable by default. Fixed in 3.1.3.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 09f099dbfda179e439ec677d06ad737375899eef (Commit)

## Referenzen

- <https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-9gvv-qjj3-2p6g>
- <https://www.vulncheck.com/advisories/flowise-before-sandbox-escape-via-puppeteer>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73483) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_