Vulnerability Description
Vite is a frontend tooling framework for JavaScript. Prior to 8.0.16, 7.3.5, and 6.4.3, the contents of files that are specified by server.fs.deny can be returned to the browser on Windows. Vite’s dev server denies direct access to sensitive files through server.fs.deny, including entries such as .env, .env.*, and *.{crt,pem}. However, on Windows, the deny logic does not correctly normalize NTFS ADS path forms before access checks are applied. Because of this, requests such as /.env::$DATA?raw are treated as allowed paths, while Windows resolves them to the original file's default data stream. Similar to that, Windows allows accessing a file using a different name with the 8.3 short name compatibility feature. Vite did not reject accessing files via them. This vulnerability is fixed in 8.0.16, 7.3.5, and 6.4.3.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Vitejs | Vite | < 6.4.3 |
| Voidzero | Vite\+ | < 0.1.24 |
| Microsoft | Windows | - |
Related Weaknesses (CWE)
References
- https://github.com/vitejs/vite/security/advisories/GHSA-fx2h-pf6j-xcffExploitVendor Advisory
- https://github.com/vitejs/vite/security/advisories/GHSA-fx2h-pf6j-xcffExploitVendor Advisory
FAQ
What is CVE-2026-53571?
CVE-2026-53571 is a vulnerability with a CVSS score of 7.5 (HIGH). Vite is a frontend tooling framework for JavaScript. Prior to 8.0.16, 7.3.5, and 6.4.3, the contents of files that are specified by server.fs.deny can be returned to the browser on Windows. Vite’s dev...
How severe is CVE-2026-53571?
CVE-2026-53571 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53571?
Check the references section above for vendor advisories and patch information. Affected products include: Vitejs Vite, Voidzero Vite\+, Microsoft Windows.