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A critical vulnerability (CVE-2025-30208) has been discovered in Vite development servers, allowing attackers to bypass `server.fs.deny` restrictions by appending `?raw??` or `?import&raw??` to URLs. This flaw enables arbitrary file reading, exposing sensitive data, system configurations, and application secrets.
Affected Versions:
- Vite >=6.2.0, <=6.2.2
- Vite >=6.1.0, <=6.1.1
- Vite >=6.0.0, <=6.0.11
- Vite >=5.0.0, <=5.4.14
- Vite <=4.5.9
You Should Know:
1. Verify Your Vite Version
npm list vite
Or for global installations:
npm list -g vite
2. Immediate Mitigation
Update to the latest patched version:
npm update vite
For global installations:
npm update -g vite
3. Check `server.fs.deny` Configurations
Ensure your `vite.config.js` has strict file access controls:
export default {
server: {
fs: {
deny: ['.env', '.key', '/etc/passwd'] // Block sensitive files
}
}
}
4. Test for Vulnerability
Use `curl` to check if your server is exposed:
curl http://localhost:3000/.env?raw??
If the server returns file contents, it’s vulnerable.
5. Monitor Server Logs
Use `grep` to detect exploitation attempts:
tail -f /var/log/vite.log | grep -E '\?raw\?\?|\?import&raw\?\?'
6. Restrict Network Access
Limit Vite dev server exposure using `iptables`:
sudo iptables -A INPUT -p tcp --dport 3000 -s 127.0.0.1 -j ACCEPT sudo iptables -A INPUT -p tcp --dport 3000 -j DROP
7. Alternative: Use HTTPS Strictly
Generate a self-signed cert and enforce HTTPS:
openssl req -x509 -newkey rsa:4096 -nodes -out cert.pem -keyout key.pem -days 365
Update `vite.config.js`:
export default {
server: {
https: {
key: './key.pem',
cert: './cert.pem'
}
}
}
What Undercode Say:
This vulnerability highlights the risks of lax dev-server configurations. Always:
– Audit dependencies (npm audit).
– Isolate dev environments (Docker/VMs).
– Enforce least privilege (file permissions, firewall rules).
– Log aggressively (journalctl -u vite --no-pager -f).
For Linux admins:
Find all running Vite instances ps aux | grep vite Kill vulnerable processes pkill -f "vite" Backup critical files before patching tar -czvf vite_backup.tar.gz /path/to/vite_project
Windows users:
List npm-installed packages npm list --depth=0 Force reinstall Vite npm install vite@latest --force
Expected Output:
[email protected] (latest)
Stay vigilant—dev tools are prime attack surfaces. Patch, isolate, and monitor. 🔒
References:
Reported By: Punitdarji Cybersecurity – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
