CVE-2025-59427— Cloudflare vite plugin exposes secrets over the built-in dev server
Quick assessment
Affected
cloudflare workers-sdk
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.
Cloudflare Workers SDK是Cloudflare开源的一个开发者工具包。 Cloudflare Workers SDK 1.6.0之前版本存在信息泄露漏洞，该漏洞源于默认配置下本地开发服务器暴露所有文件，可能导致敏感信息泄露。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2025-59427
Vulnerability Information
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Vulnerability Title
Cloudflare vite plugin exposes secrets over the built-in dev server
Source: CVE Program / CVE List V5
Vulnerability Description
The Cloudflare Vite plugin enables a full-featured integration between Vite and the Workers runtime. When utilising the Cloudflare Vite plugin in its default configuration, all files are exposed by the local dev server, including files in the root directory that contain secret information such as .env and .dev.vars. This vulnerability is fixed in 1.6.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Cloudflare Workers SDK 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cloudflare Workers SDK是Cloudflare开源的一个开发者工具包。 Cloudflare Workers SDK 1.6.0之前版本存在信息泄露漏洞，该漏洞源于默认配置下本地开发服务器暴露所有文件，可能导致敏感信息泄露。
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 |
|---|---|---|---|---|
| cloudflare | workers-sdk | < 1.6.0 | - |
|
II. Public POCs for CVE-2025-59427
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2025-59427 Cloudflare & Vite/Wrangler With Simple 403 Bypass | https://github.com/ibnurusdianto/CVE-2025-59427 | POC Details |
AI-Generated POC
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V. Comments for CVE-2025-59427
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