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CVE-2026-47429— Vitest: Arbitrary file can be read and executed when Vitest UI server is listening

Quick assessment

Affected
vitest-dev vitest
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vitest vitest是Vitest公司的一款快速的前端测试框架。 Vitest 3.2.5之前版本和4.1.0之前版本存在路径遍历漏洞，该漏洞源于isFileServingAllowed使用不当和路径遍历问题，可能导致读取项目外部文件以及通过暴露的API功能执行任意脚本。

CVSS 9.8 · Critical EPSS 0.88% · P58

Affected Version Matrix 2

VendorProduct Version RangeStatus
vitest-dev vitest < 3.2.5 affected
>= 4.0.0, < 4.1.0 affected
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I. Basic Information for CVE-2026-47429

Vulnerability Information
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Vulnerability Title
Vitest: Arbitrary file can be read and executed when Vitest UI server is listening
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Vitest 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vitest vitest是Vitest公司的一款快速的前端测试框架。 Vitest 3.2.5之前版本和4.1.0之前版本存在路径遍历漏洞，该漏洞源于isFileServingAllowed使用不当和路径遍历问题，可能导致读取项目外部文件以及通过暴露的API功能执行任意脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vitest-dev vitest < 3.2.5 -

II. Public POCs for CVE-2026-47429

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6101 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-47429

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Patches & Fixes for CVE-2026-47429 (2)

Vendor Advisories for CVE-2026-47429 (1)

Vendor Pages for CVE-2026-47429 (1)

Other References for CVE-2026-47429 (1)

Same Patch Batch · vitest-dev · 2026-07-14 · 3 CVEs total

CVE-2026-53633 9.8 CRITICAL Vitest: Exposed Browser Mode API Can Proxy CDP and Overwrite Config Files, Leading to RCE
CVE-2026-47428 9.6 CRITICAL Vitest browser mode serves unsanitized otelCarrier query parameter as inline script

IV. Related Vulnerabilities

Same product: vitest
Same vendor: vitest-dev
Same weakness: CWE-22

V. Comments for CVE-2026-47429

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