Medium 6.5Published Oct 20, 2026

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

Updated under an hour ago (2026-10-21 10:00 UTC)

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It affects vitest-dev vitest and 3 other products. Add what you run to find out whether that includes you.

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Every CVE for vitest-dev vitest

Exploited in the last 30 days

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.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-200, CWE-552
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 20, 2026
First seen by InfoSec Signals: Oct 20, 2026

Affected products

Affected products

vitest-dev vitest vitest_dev:vitest (from the name)	from 5.0.0-beta.6, < 5.0.5	CNA record
@vitest browser vitest:browser (from the name)	from 5.0.0-beta.6, < 5.0.5	CNA record
@vitest ui vitest:ui (from the name)	from 5.0.0-beta.6, < 5.0.5	CNA record
vitejs vite-plus vitejs:vite_plus (from the name)	from 1.0.0-rc.0, < 1.3.0	CNA record

References

https://github.com/vitest-dev/vitest/security/advisories/GHSA-p458-7748-mcp3x-refsource-confirm
https://github.com/vitest-dev/vitest/pull/11578x-refsource-misc
https://github.com/vitest-dev/vitest/commit/28dc1edfb6ba5a181fe208576989063795aeadb3x-refsource-misc
https://github.com/vitest-dev/vitest/releases/tag/v5.0.5x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.