GitHub Advisoryadvisory · npm

GHSA-v2wj-q39q-566r Vite: `server.fs.deny` bypassed with queries

HIGH Published 2026-04-06 Modified 2026-04-07 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

Weakness · CWE (2)

  • CWE-180 Incorrect Behavior Order: Validate Before Canonicalize weakness
  • CWE-284 Improper Access Control weakness

References