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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| vitejs | vite | >= 8.0.0, < 8.0.16, >= 7.0.0, < 7.3.5, < 6.4.3 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | nextcloud-server-33 | 33.0.6-r2 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
TazmiDev/CVE-2026-53571 ★ 1 · Jul 9, 2026
CVE-2026-53571 `server.fs.deny` bypass on Windows alternate paths PoC.
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | vite | >= 8.0.0, < 8.0.16 | 8.0.16 | GHSA-fx2h-pf6j-xcff |
| npm | vite | >= 7.0.0, < 7.3.5 | 7.3.5 | GHSA-fx2h-pf6j-xcff |
| npm | vite | < 6.4.3 | 6.4.3 | GHSA-fx2h-pf6j-xcff |
| npm | vite-plus | < 0.1.24 | 0.1.24 | GHSA-fx2h-pf6j-xcff |