CVE-2026-53571 Vite: `server.fs.deny` bypass on Windows alternate paths

Vite is a frontend tooling framework for JavaScript. Prior to 8.0.16, 7.3.5, and 6.4.3, the contents of files that are specified by server.fs.deny can be returned to the browser on Windows. Vite’s dev server denies direct access to sensitive files through server.fs.deny, including entries such as...

vite: `server.fs.deny` bypass on Windows alternate paths

Summary The contents of files that are specified by server.fs.deny can be returned to the browser on Windows. Impact Only apps that match the following conditions are affected: - explicitly exposes the Vite dev server to the network using --host or server.host config option - the sensitive file...