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I. Basic Information for CVE-2026-39408
Vulnerability Information

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Vulnerability Title
Hono has a path traversal in toSSG() allows writing files outside the output directory
Source: NVD (National Vulnerability Database)
Vulnerability Description
Hono is a Web application framework that provides support for any JavaScript runtime. Prior to 4.12.12, a path traversal issue in toSSG() allows files to be written outside the configured output directory during static site generation. When using dynamic route parameters via ssgParams, specially crafted values can cause generated file paths to escape the intended output directory. This vulnerability is fixed in 4.12.12.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Hono 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Hono是Hono社区的一个用 TypeScript 编写的 Web 框架。 Hono 4.12.12之前版本存在路径遍历漏洞,该漏洞源于toSSG函数存在路径遍历问题,可能导致在静态站点生成期间将文件写入配置的输出目录之外。
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
honojshono < 4.12.12 -
II. Public POCs for CVE-2026-39408
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III. Intelligence Information for CVE-2026-39408
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IV. Related Vulnerabilities
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