Title:Vite Affected by Arbitrary File Read via Vite Dev Server WebSocket (CVE-2026-39363) Description: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.
File Snapshot
# Vite Development Server WebSocket Arbitrary File Read (CVE-2026-39363)
[中文版本(Chinese version)](RE
...
Shenlong Bot has cached this for you
Remarks
1. It is advised to access via the original source first.2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.3. Mirroring, verifying, and maintaining this POC archive takes ongoing effort, so local snapshots are a paid feature. Your subscription keeps the archive online — thank you for the support. View subscription plans →