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CVE-2026-105800GHSA-XVQ9-WJP8-HWQF

i18next-http-backend incomplete URL validation permits SSRF

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 4.0.2
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: partial

Summary

i18next-http-backend is a backend layer for i18next that loads translation resources in Node.js, browsers, and Deno. Prior to 4.0.2, attacker-controlled language or namespace values interpolated into a custom loadPath or addPath that begins directly with {{lng}} or {{ns}} can make colon-based input become an absolute URL or, in browsers, make a double-slash namespace become a protocol-relative URL. The resulting request can leave the intended origin and cause URL injection or server-side request forgery. The default /locales/{{lng}}/{{ns}}.json template and templates with a leading path or origin are not affected because the placeholder does not occupy the URL's structural beginning. This issue is fixed in version 4.0.2.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • i18next i18next-http-backend

    fixed in 4.0.2

  • i18next-http-backendnpm

    fixed in 4.0.2

References 3

GitHub · i18next/i18next-http-backend