---
id: CVE-2026-112948
title: >-
  Vitest: Servers misapply `server.fs.deny`, serving `.env`, private keys,
  `.git`, and the API token file
summary: >-
  Vitest is a testing framework powered by Vite. From 5.0.0-beta.6 until 5.0.5,
  Vitest dev servers can misapply server.fs.deny because project servers replace
  Vite's defaults and the root server adds .vitest-secret-token after Vite
  compile…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-200
  - CWE-552
vendor: vitest-dev
product: vitest
affected:
  - 'vitest >= 5.0.0-beta.6, < 5.0.5'
  - 'browser >= 5.0.0-beta.6, < 5.0.5'
  - 'ui >= 5.0.0-beta.6, < 5.0.5'
  - 'vite-plus >= 1.0.0-rc.0, < 1.3.0'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-20T16:16:51.150771Z'
published: '2026-10-20'
updated: '2026-10-20'
sourceUpdated: '2026-10-20T16:16:59.623Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112948'
references:
  - url: >-
      https://github.com/vitest-dev/vitest/security/advisories/GHSA-p458-7748-mcp3
    label: >-
      https://github.com/vitest-dev/vitest/security/advisories/GHSA-p458-7748-mcp3
  - url: 'https://github.com/vitest-dev/vitest/pull/11578'
    label: 'https://github.com/vitest-dev/vitest/pull/11578'
  - url: >-
      https://github.com/vitest-dev/vitest/commit/28dc1edfb6ba5a181fe208576989063795aeadb3
    label: >-
      https://github.com/vitest-dev/vitest/commit/28dc1edfb6ba5a181fe208576989063795aeadb3
  - url: 'https://github.com/vitest-dev/vitest/releases/tag/v5.0.5'
    label: 'https://github.com/vitest-dev/vitest/releases/tag/v5.0.5'
tags:
  - cve.org
ingestedAt: '2026-10-20T16:10:53.317Z'
---

## Overview

Vitest is a testing framework powered by Vite. From 5.0.0-beta.6 until 5.0.5, Vitest dev servers can misapply server.fs.deny because project servers replace Vite's defaults and the root server adds .vitest-secret-token after Vite compiles its matcher. An attacker who can reach an affected UI, Browser Mode, or API server can read denied project files or the fallback API token at node_modules/.vitest/.vitest-secret-token, and Browser Mode with test.projects can expose JavaScript-compatible .env values through a malicious website. This issue is fixed in version 5.0.5.

## Affected

- `vitest >= 5.0.0-beta.6, < 5.0.5`
- `browser >= 5.0.0-beta.6, < 5.0.5`
- `ui >= 5.0.0-beta.6, < 5.0.5`
- `vite-plus >= 1.0.0-rc.0, < 1.3.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.