GitHub Advisoryadvisory · npm
GHSA-4r4m-qw57-chr8 Vite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` query
MEDIUM
Official page ↗
- Aliases
- CVE-2025-31125
- Ecosystem
- npm
- Packages
- vite
- Severity
- Moderate
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-200, CWE-284
- Reviewed
- 2025-03-31
Affected packages
• npm vite: >= 6.2.0, < 6.2.4 → fixed in 6.2.4
• npm vite: >= 6.1.0, < 6.1.3 → fixed in 6.1.3
• npm vite: >= 6.0.0, < 6.0.13 → fixed in 6.0.13
• npm vite: >= 5.0.0, < 5.4.16 → fixed in 5.4.16
• npm vite: < 4.5.11 → fixed in 4.5.11
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) are affected.
Details
• base64 encoded content of non-allowed files is exposed using `?inline&import` (originally reported as `?import&?inline=1.wasm?init`)
• content of non-allowed files is exposed using `?raw?import`
`/@fs/` isn't needed to reproduce the issue for files inside the project root.
PoC
Original report (check details above for simplified cases):
The ?import&?inline=1.wasm?init ending allows attackers to read arbitrary files and returns the file content if it exists. Base64 decoding needs to be performed twice
```
$ npm create vite@latest
$ cd vite-project/
$ npm install
$ npm run dev
```
Example full URL `http://localhost:5173/@fs/C:/windows/win.ini?import&?inline=1.wasm?init`
Related
Alias · CVE (1)
- CVE-2025-31125 Vite is a frontend tooling framework for javascript. vulnerability
References
- https://github.com/vitejs/vite/security/advisories/GHSA-4r4m-qw57-chr8 web
- https://nvd.nist.gov/vuln/detail/CVE-2025-31125 advisory
- https://github.com/vitejs/vite/commit/59673137c45ac2bcfad1170d954347c1a17ab949 web
- https://github.com/vitejs/vite package
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31125 web