{"id":"CVE-2025-31125","aliases":["GHSA-4r4m-qw57-chr8"],"url":"https://o3.security/vulnerability/CVE-2025-31125","summary":"Vite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` query","details":"### Summary\n\nThe contents of arbitrary files can be returned to the browser.\n\n### Impact\nOnly apps explicitly exposing the Vite dev server to the network (using `--host` or [`server.host` config option](https://vitejs.dev/config/server-options.html#server-host)) are affected.\n\n### Details\n\n- base64 encoded content of non-allowed files is exposed using `?inline&import` (originally reported as `?import&?inline=1.wasm?init`)\n- content of non-allowed files is exposed using `?raw?import`\n\n`/@fs/` isn't needed to reproduce the issue for files inside the project root.\n\n### PoC\n\nOriginal report (check details above for simplified cases):\n\nThe ?import&?inline=1.wasm?init ending allows attackers to read arbitrary files and returns the file content if it exists.  Base64 decoding needs to be performed twice\n```\n$ npm create vite@latest\n$ cd vite-project/\n$ npm install\n$ npm run dev\n```\n\nExample full URL `http://localhost:5173/@fs/C:/windows/win.ini?import&?inline=1.wasm?init`","published":"2025-03-31T17:06:30.704Z","modified":"2026-10-21T02:30:48.072982584Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"},"epss":{"score":0.58462,"percentile":0.99042,"asOf":"2026-09-11"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"vite","fixedVersion":"6.2.4"},{"ecosystem":"npm","name":"vite","fixedVersion":"6.1.3"},{"ecosystem":"npm","name":"vite","fixedVersion":"6.0.13"},{"ecosystem":"npm","name":"vite","fixedVersion":"5.4.16"},{"ecosystem":"npm","name":"vite","fixedVersion":"4.5.11"}],"fix":{"url":"https://github.com/vitejs/vite/commit/59673137c45ac2bcfad1170d954347c1a17ab949","label":"vitejs/vite@5967313"},"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-31125"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/31xxx/CVE-2025-31125.json"},{"type":"ADVISORY","url":"https://github.com/vitejs/vite/security/advisories/GHSA-4r4m-qw57-chr8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31125"},{"type":"FIX","url":"https://github.com/vitejs/vite/commit/59673137c45ac2bcfad1170d954347c1a17ab949"},{"type":"PACKAGE","url":"https://github.com/vitejs/vite"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:30:48.072982584Z"}}