CVE-2025-31486: Vitejs Vite

Medium severity, CVSS 5.3. EPSS: 40.5% chance of exploitation in the next 30 days.

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.

Affected products

• Vitejs Vite: before 4.5.12 (fixed in 4.5.12); from 5.0.0, before 5.4.17 (fixed in 5.4.17); from 6.0.0, before 6.0.14 (fixed in 6.0.14); from 6.1.0, before 6.1.4 (fixed in 6.1.4); from 6.2.0, before 6.2.5 (fixed in 6.2.5)

Published 2025-04-03. Last modified 2026-06-17.