CVE-2026-112948 · GHSA-p458-7748-mcp3
Vitest: Servers misapply `server.fs.deny`, serving `.env`, private keys, `.git`, and the API token file
- Risk score
- 51/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 20 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 serv…
- Affected
- @vitest/ui (npm) >= 5.0.0-beta.6, < 5.0.5; @vitest/browser (npm) >= 5.0.0-beta.6, < 5.0.5; vite-plus (npm) >= 1.0.0-rc.0, < 1.3.0
- Fix
- Upgrade @vitest/ui to 5.0.5; @vitest/browser to 5.0.5; vite-plus to 1.3.0 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
- On your watchlist: npm
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| @vitest/ui | npm | >= 5.0.0-beta.6, < 5.0.5 | 5.0.5 |
| @vitest/browser | npm | >= 5.0.0-beta.6, < 5.0.5 | 5.0.5 |
| vite-plus | npm | >= 1.0.0-rc.0, < 1.3.0 | 1.3.0 |
References
- https://github.com/advisories/GHSA-p458-7748-mcp3
- https://github.com/vitest-dev/vitest/security/advisories/GHSA-p458-7748-mcp3
- https://nvd.nist.gov/vuln/detail/CVE-2026-112948
- https://github.com/vitest-dev/vitest/pull/11578
- https://github.com/vitest-dev/vitest/commit/28dc1edfb6ba5a181fe208576989063795aeadb3
- https://github.com/vitest-dev/vitest/releases/tag/v5.0.5
- https://github.com/advisories/GHSA-p458-7748-mcp3
Original 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.
Last activity 20 Oct 2026. Patch Forecast updates every hour.