GitHub Advisoryadvisory · npm
GHSA-v2wj-q39q-566r Vite: `server.fs.deny` bypassed with queries
HIGH
Official page ↗
- Aliases
- CVE-2026-39364
- Ecosystem
- npm
- Packages
- vite
- Severity
- High
- CVSS vector
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Weaknesses
- CWE-180, CWE-284
- Reviewed
- 2026-04-06
Affected packages
• npm vite: >= 8.0.0, < 8.0.5 → fixed in 8.0.5
• npm vite: >= 7.1.0, < 7.3.2 → fixed in 7.3.2
Description
Summary
The contents of files that are specified by `server.fs.deny` can be returned to the browser.
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 exists in the allowed directories specified by `server.fs.allow`
• the sensitive file is denied with a pattern that matches a file by `server.fs.deny`
Details
On the Vite dev server, files that should be blocked by `server.fs.deny` (e.g., `.env`, `*.crt`) can be retrieved with HTTP 200 responses when query parameters such as `?raw`, `?import&raw`, or `?import&url&inline` are appended.
PoC
1. Start the dev server: `pnpm exec vite root --host 127.0.0.1 --port 5175 --strictPort`
2. Confirm that `server.fs.deny` is enforced (expect 403): `curl -i http://127.0.0.1:5175/src/.env | head -n 20`
3. Confirm that the same files can be retrieved with query parameters (expect 200):
Related
Alias · CVE (1)
- CVE-2026-39364 Vite is a frontend tooling framework for JavaScript. vulnerability
References
- https://github.com/vitejs/vite/security/advisories/GHSA-v2wj-q39q-566r web
- https://nvd.nist.gov/vuln/detail/CVE-2026-39364 advisory
- https://github.com/vitejs/vite/pull/22160 web
- https://github.com/vitejs/vite/commit/a9a3df299378d9cbc5f069e3536a369f8188c8ff web
- https://github.com/vitejs/vite package
- https://github.com/vitejs/vite/releases/tag/v7.3.2 web
- https://github.com/vitejs/vite/releases/tag/v8.0.5 web