SB2025063016 - Improper access control in Vite

Description

This security bulletin contains information about 1 security vulnerability.

1) Improper access control (CVE-ID: CVE-2025-31486)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to 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+.. A remote attacker can bypass implemented security restrictions and gain unauthorized access to the application.

Remediation

Install update from vendor's website.

References

• https://github.com/vitejs/vite/blob/037f801075ec35bb6e52145d659f71a23813c48f/packages/vite/src/node/plugins/asset.ts#L285-L290
• https://github.com/vitejs/vite/commit/62d7e81ee189d65899bb65f3263ddbd85247b647
• https://github.com/vitejs/vite/security/advisories/GHSA-xcj6-pq6g-qj4x