CRITICAL

CVE-2026-47429

CVSS v3

9.8

CRITICAL

EPSS Score

0.9 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

vitestnpmall versions · fixed in 3.2.6

Vendor advisories

CVE-2026-47429 Red Hat Product Security3 products fixed
vitest: Vitest: Arbitrary code execution and information disclosure via path traversal
RHSA-2026:39058 Red Hat Product Security3 products fixed
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Full record on NVD

Description

Vitest is a testing framework powered by Vite. Prior to 3.2.5 and 4.1.0, the Vitest UI/API server on Windows used isFileServingAllowed incorrectly for /__vitest_attachment__, allowing \\?\\..\\ path traversal to read files outside the project; exposed API write and rerun features such as saveTestFile and rerun could also allow arbitrary script execution. This issue is fixed in versions 3.2.5 and 4.1.0.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-07-14
Last Modified: 2026-07-15

Frequently asked questions

What is CVE-2026-47429?

Is CVE-2026-47429 actively exploited?

Active exploitation of CVE-2026-47429 has not been confirmed. Its EPSS score was 0.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-47429?

CVE-2026-47429 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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