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CVE-2025-31486— Vite allows server.fs.deny to be bypassed with .svg or relative paths

CVSS 5.3 · Medium EPSS 2.46% · P85
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I. Basic Information for CVE-2025-31486

Vulnerability Information
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Vulnerability Title
Vite allows server.fs.deny to be bypassed with .svg or relative paths
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vite is a frontend tooling framework for javascript. The contents of arbitrary files can be returned to the browser. By adding ?.svg with ?.wasm?init or with sec-fetch-dest: script header, the server.fs.deny restriction was able to bypass. This bypass is only possible if the file is smaller than build.assetsInlineLimit (default: 4kB) and when using Vite 6.0+. Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected. This vulnerability is fixed in 4.5.12, 5.4.17, 6.0.14, 6.1.4, and 6.2.5.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
信息暴露
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vite 安全漏洞
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存在安全漏洞，该漏洞源于任意文件内容可返回浏览器，可能导致绕过限制。
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

VendorProductAffected VersionsCPESubscribe
vitejsvite < 4.5.12 -

II. Public POCs for CVE-2025-31486

#POC DescriptionSource LinkShenlong Link
1Vite任意文件读取漏洞批量检测脚本CVE-2025-31486https://github.com/iSee857/CVE-2025-31486-PoCPOC Details
2CVE-2025-31486 pochttps://github.com/Ly4j/CVE-2025-31486POC Details
3Nonehttps://github.com/hackmelocal/CVE-2025-31486-SimulationPOC Details
4Vite is a frontend tooling framework for javascript. The contents of arbitrary files can be returned to the browser. By adding ?.svg with ?.wasm?init or with sec-fetch-dest- script header, the server.fs.deny restriction was able to bypass. This bypass is only possible if the file is smaller than build.assetsInlineLimit (default- 4kB) and when using Vite 6.0+. Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-31486.yamlPOC Details
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III. Intelligence Information for CVE-2025-31486

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IV. Related Vulnerabilities

Same product: vite
Same vendor: vitejs
Same weakness: CWE-200

V. Comments for CVE-2025-31486

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