---
cve: "CVE-2026-39363"
severity: "HIGH"
cvss: 8.2
epss: "3.3%"
vendor: "vitejs"
kev: false
exploited: false
published: "2026-04-07 20:16:30"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-04T05:26:57+02:00"
---

# CVE-2026-39363

> 8.2 HIGH · 🧪 PoC

## Beschreibung

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, if it is possible to connect to the Vite dev server’s WebSocket without an Origin header, an attacker can invoke fetchModule via the custom WebSocket event vite:invoke and combine file://... with ?raw (or ?inline) to retrieve the contents of arbitrary files on the server as a JavaScript string (e.g., export default "..."). The access control enforced in the HTTP request path (such as server.fs.allow) is not applied to this WebSocket-based execution path. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 1a12d4ca4c62eedaeaf734d722b27ab17b5b1dd0 (Commit)
- cc383e07b66d4c5a9768fcb570e0af812cb8d999 (Commit)

## Referenzen

- <https://github.com/vitejs/vite/security/advisories/GHSA-p9ff-h696-f583>
- <https://access.redhat.com/errata/RHSA-2026:24761>
- <https://access.redhat.com/errata/RHSA-2026:24762>
- <https://access.redhat.com/errata/RHSA-2026:24866>
- <https://access.redhat.com/errata/RHSA-2026:59153>
- <https://access.redhat.com/security/cve/CVE-2026-39363>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2456179>
- <https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39363.json>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-39363) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_