Path Traversal in Microsoft Windows
CVE-2026-53571
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Microsoft Windows
- Vitejs Vite — versions >= 8.0.0, < 8.0.16, >= 7.0.0, < 7.3.5, < 6.4.3
- Voidzero Vite\+
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/vitejs/vite/security/advisories/GHSA-fx2h-pf6j-xcff (Exploit, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-53571?
- CVE-2026-53571 is a high-severity vulnerability in Microsoft Windows, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-06-22.
- How severe is CVE-2026-53571?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-53571 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.