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CVE-2025-62522— vite allows server.fs.deny bypass via backslash on Windows

Quick assessment

Affected
vitejs vite
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.

Vite是Vite开源的一种新型的前端构建工具。 Vite存在路径遍历漏洞，该漏洞源于Windows环境下URL以结尾时发送了server.fs.deny拒绝的文件，可能导致信息泄露。以下版本受到影响：2.9.18版本至3.0.0之前版本、3.2.9版本至4.0.0之前版本、4.5.3版本至5.0.0之前版本、5.2.6版本至5.4.21之前版本、6.0.0版本至6.4.1之前版本、7.0.0版本至7.0.8之前版本和7.1.0版本至7.1.11之前版本。

AI Predicted 6.5 Difficulty: Easy EPSS 1.05% · P63

Public Exploits 1

Nuclei · 1 CVE-2025-62522.yaml [template]

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-62522

Vulnerability Information
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Vulnerability Title
vite allows server.fs.deny bypass via backslash on Windows
Source: CVE Program / CVE List V5
Vulnerability Description
Vite is a frontend tooling framework for JavaScript. In versions from 2.9.18 to before 3.0.0, 3.2.9 to before 4.0.0, 4.5.3 to before 5.0.0, 5.2.6 to before 5.4.21, 6.0.0 to before 6.4.1, 7.0.0 to before 7.0.8, and 7.1.0 to before 7.1.11, files denied by server.fs.deny were sent if the URL ended with \ when the dev server is running on Windows. Only apps explicitly exposing the Vite dev server to the network and running the dev server on Windows were affected. This issue has been patched in versions 5.4.21, 6.4.1, 7.0.8, and 7.1.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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
Vite 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vite是Vite开源的一种新型的前端构建工具。 Vite存在路径遍历漏洞，该漏洞源于Windows环境下URL以结尾时发送了server.fs.deny拒绝的文件，可能导致信息泄露。以下版本受到影响：2.9.18版本至3.0.0之前版本、3.2.9版本至4.0.0之前版本、4.5.3版本至5.0.0之前版本、5.2.6版本至5.4.21之前版本、6.0.0版本至6.4.1之前版本、7.0.0版本至7.0.8之前版本和7.1.0版本至7.1.11之前版本。
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
vitejs vite >= 7.1.0, < 7.1.11 -

II. Public POCs for CVE-2025-62522

# POC Description Source Link Shenlong Link
1 Vite is a frontend tooling framework for JavaScript.In versions from 2.9.18 to before 3.0.0, 3.2.9 to before 4.0.0, 4.5.3 to before 5.0.0, 5.2.6 to before 5.4.21, 6.0.0 to before 6.4.1, 7.0.0 to before 7.0.8, and 7.1.0 to before 7.1.11, files denied by server.fs.deny were sent if the URL ended with \ when the dev server is running on Windows. Only apps explicitly exposing the Vite dev server to the network and running the dev server on Windows were affected. This issue has been patched in versions 5.4.21, 6.4.1, 7.0.8, and 7.1.11. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-62522.yaml POC Details
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III. Intelligence Information for CVE-2025-62522

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Vendor Advisories for CVE-2025-62522 (1)

IV. Related Vulnerabilities

Same product: vite
Same vendor: vitejs
Same weakness: CWE-22

V. Comments for CVE-2025-62522

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