CVE-2025-31486 PoC — Vite allows server.fs.deny to be bypassed with .svg or relative paths

Source

https://github.com/Ly4j/CVE-2025-31486

Associated Vulnerability

Title: Vite allows server.fs.deny to be bypassed with .svg or relative paths (CVE-2025-31486)
Description:Vite is a frontend tooling framework for javascript. The contents of arbitrary files can be returned to the browser. By adding ?.svg with ?.wasm?init or with sec-fetch-dest: script header, the server.fs.deny restriction was able to bypass. This bypass is only possible if the file is smaller than build.assetsInlineLimit (default: 4kB) and when using Vite 6.0+. Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected. This vulnerability is fixed in 4.5.12, 5.4.17, 6.0.14, 6.1.4, and 6.2.5.

Description

CVE-2025-31486 poc

Readme

```CVE-2025-31486-PoC.py url```

![image](https://github.com/user-attachments/assets/744d0ec4-bf82-4acb-a262-88b74fcc3730)

For details on vulnerability reproduction and specific environment setup, please refer to：https://chenchena.blog.csdn.net/article/details/147150357?spm=1001.2014.3001.5502

File Snapshot

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