---
cve: "CVE-2026-47429"
severity: "CRITICAL"
cvss: 9.8
epss: "92%"
vendor: "vitest-dev"
kev: false
exploited: false
published: "2026-07-14 20:17:02"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-03T00:31:26+02:00"
---

# CVE-2026-47429

> 9.8 CRITICAL · 🧪 PoC

## Beschreibung

Vitest is a testing framework powered by Vite. Prior to 3.2.5 and 4.1.0, the Vitest UI/API server on Windows used isFileServingAllowed incorrectly for /__vitest_attachment__, allowing \\?\\..\\ path traversal to read files outside the project; exposed API write and rerun features such as saveTestFile and rerun could also allow arbitrary script execution. This issue is fixed in versions 3.2.5 and 4.1.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- 2cbad0a923c48c6144266df3cd25f93547cb5221 (Commit)
- 4150b913171bda3971a4a4c47c633c26d0c6ae45 (Commit)

## Referenzen

- <https://github.com/vitest-dev/vitest/security/advisories/GHSA-5xrq-8626-4rwp>
- <https://github.com/vitest-dev/vitest/pull/10445>
- <https://github.com/vitest-dev/vitest/pull/9350>
- <https://github.com/vitest-dev/vitest/commit/20e00ef7808de6d330c5e2fda530f686e08f1c8d>
- <https://github.com/vitest-dev/vitest/commit/af88b1f5d82844a4761ea9a977156c98e2b14ca8>
- <https://github.com/vitest-dev/vitest/releases/tag/v3.2.5>
- <https://github.com/vitest-dev/vitest/releases/tag/v4.1.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-47429) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_