CVE-2026-42353— Path traversal / SSRF in i18next-http-middleware via user-controlled language and namespace parameters
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I. Basic Information for CVE-2026-42353
Vulnerability Information
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Vulnerability Title
Path traversal / SSRF in i18next-http-middleware via user-controlled language and namespace parameters
Source: NVD (National Vulnerability Database)
Vulnerability Description
i18next-http-middleware is a middleware to be used with Node.js web frameworks like express or Fastify and also for Deno. Prior to version 3.9.3, i18next-http-middleware passes the user-controlled lng and ns values from getResourcesHandler directly into i18next.services.backendConnector.load(languages, namespaces, …) without any sanitization. Depending on which backend is configured, the unvalidated path segments enable either path traversal or SSRF. This issue has been patched in version 3.9.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
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
i18next-http-middleware 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
i18next-http-middleware是i18next开源的一个用于Node.js和Deno的HTTP国际化中间件。 i18next-http-middleware 3.9.3之前版本存在路径遍历漏洞，该漏洞源于未对用户控制的lng和ns值进行清理，可能导致路径遍历或SSRF攻击。
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 |
|---|---|---|---|---|
| i18next | i18next-http-middleware | < 3.9.3 | - |
II. Public POCs for CVE-2026-42353
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|---|
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Same Patch Batch · i18next · 2026-05-08 · 4 CVEs total
| CVE-2026-41683 | 8.6 HIGH | HTTP response splitting and DoS in i18next-http-middleware via unsanitised Content-Languag |
| CVE-2026-41690 | 8.6 HIGH | Prototype pollution and path traversal in i18next-http-middleware via user-controlled lang |
| CVE-2026-41693 | 8.2 HIGH | i18next-fs-backend: Path traversal via unsanitised lng/ns allows arbitrary file read/overw |
IV. Related Vulnerabilities
Same vendor: i18next
- CVE-2026-41693
i18next-fs-backend: Path traversal via unsanitised lng/ns al - CVE-2026-41683
HTTP response splitting and DoS in i18next-http-middleware v - CVE-2026-41690
Prototype pollution and path traversal in i18next-http-middl - CVE-2026-41691
i18next-http-backend has Path Traversal & URL Injection via - CVE-2026-41692
i18nextify is vulnerable to DOM XSS via javascript:/data: UR
Same weakness: CWE-22
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npitre cramfs-tools Directory cramfsck.c do_directory path t - CVE-2022-50956
WordPress Plugin amministrazione-aperta 3.7.3 Local File Rea - CVE-2026-8215
Industrial Application Software IAS Canias ERP RMI iasReques - CVE-2026-42605
AzuraCast: Path Traversal in `currentDirectory` Parameter En - CVE-2026-42574
apko dirFS has a symlink-following path traversal that allow
V. Comments for CVE-2026-42353
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