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Vulnerability · Published Oct 20, 2026 · Assigned by GitHub_M

CVE-2026-112948Vitest: Servers misapply `server.fs.deny`, serving `.env`, private keys, `.git`, and the API token file

Medium 6.5

In plain English

A medium-severity information exposure in vite-plus from vitejs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 65.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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 packages & fixed versions

EcosystemPackageFixed inAdvisory
npm@vitest/browser5.0.5GHSA-p458-7748-mcp3
npm@vitest/ui5.0.5GHSA-p458-7748-mcp3
npmvite-plus1.3.0GHSA-p458-7748-mcp3

Affected products (as reported)

VendorProductVersions
vitest-dev vitest >= 5.0.0-beta.6, < 5.0.5
@vitest browser >= 5.0.0-beta.6, < 5.0.5
@vitest ui >= 5.0.0-beta.6, < 5.0.5
vitejs vite-plus >= 1.0.0-rc.0, < 1.3.0

Weakness: CWE-200, CWE-552 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References