CVE-2025-46565
Vite's server.fs.deny bypassed with /. for files under project root
Description
### Summary The contents of files in [the project `root`](https://vite.dev/config/shared-options.html#root) that are denied by a file matching pattern 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](https://vitejs.dev/config/server-options.html#server-host)) are affected. Only files that are under [project `root`](https://vite.dev/config/shared-options.html#root) and are denied by a file matching pattern can be bypassed. - Examples of file matching patterns: `.env`, `.env.*`, `*.{crt,pem}`, `**/.env` - Examples of other patterns: `**/.git/**`, `.git/**`, `.git/**/*` ### Details [`server.fs.deny`](https://vite.dev/config/server-options.html#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 (`/.`). ### PoC ``` npm create vite@latest cd vite-project/ cat "secret" > .env npm install npm run dev curl --request-target /.env/. http://localhost:5173 ```  
How to fix CVE-2025-46565
To remediate CVE-2025-46565, upgrade the affected package to a fixed version below.
- —upgrade to 6.3.4 or later
Is CVE-2025-46565 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 6.3.0, < 6.3.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 4.0 | — | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |