CVE-2026-39363

CVE-2026-39363 — Vite Dev Server Arbitrary File Read PoC A drop-in PoC for GHSA-p9ff-h696-f583. It reads arbitrary files from the machine running the dev server by calling fetchModule over an unauthenticated HMR WebSocket, bypassing the HTTP-layer server.fs.allow restriction. Affected Versions...

CVE-2026-39363

CVE-2026-39363 affects Vite Dev Server. The WebSocket-based fetchModule RPC can be invoked without an Origin header, bypassing HTTP path access checks and enabling arbitrary file reads via file:// URLs combined with ?raw or ?inline. This occurs in Vite versions 6.0.0 up to before 6.4.2, 7.3.2, an...

Missing Authentication for Critical Function

Overview vite is a Native-ESM powered web dev build tool Affected versions of this package are vulnerable to Missing Authentication for Critical Function via the fetchModule method exposed through the WebSocket interface when the server is explicitly exposed to the network and WebSocket is enable...

PT-2026-30768

Name of the Vulnerable Software and Affected Versions Vite versions 6.0.0 through 6.4.1, 7.3.2, and 8.0.5 Description Vite, a frontend tooling framework for JavaScript, had a flaw where the server.fs check was not enforced for the fetchModule method exposed in the Vite dev server’s WebSocket. If ...