Vite versions from 2.5.1 up to but not including 6.2.5 have a vulnerability that allows arbitrary file contents to be returned to the browser. This occurs when the Vite development server is exposed to the network using the --host option or server.host configuration. The vulnerability involves bypassing the server.fs.deny restriction via requests ending with .svg or using relative paths before normalization. The issue affects files smaller than the default 4kB inline asset limit in Vite 6.0 and later. Exploitation requires network access to the dev server and user interaction (UI:R).