FKIE_CVE-2026-41692

Vulnerability from fkie_nvd - Published: 2026-05-07 21:16 - Updated: 2026-05-29 15:08
Severity
4.7 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
4.7 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
i18nextify is a JavaScript library that adds website internationalization via a script tag, without source code changes. Versions prior to 4.0.8 substitute {{key}} interpolation tokens inside src and href attribute values with the raw string returned by i18next.t(). The substitution logic in src/localize.js (the replaceInside handler) only guards against a duplicated http:// origin prefix — it does not validate the URL scheme of the substituted value. A translated value such as javascript:alert(1) or data:text/html,<script>...</script> is applied unchanged to the live DOM attribute when an attacker can influence the content of a translation file or the translation-backend response — for example, via a compromised translation CDN, user-contributed locales, a MITM on a plain-HTTP backend, or write access to the translation JSON. This issue was patched in version 4.0.8.
References
security-advisories@github.comhttps://github.com/i18next/i18nextify/commit/16f23dbcdcf893673587f7a03355bf7ce0a0e49ePatch
security-advisories@github.comhttps://github.com/i18next/i18nextify/security/advisories/GHSA-6457-mxpq-4fqqVendor Advisory
Impacted products
Vendor Product Version
i18next i18nextify *
To clipboard 

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  "descriptions": [
    {
      "lang": "en",
      "value": "i18nextify is a JavaScript library that adds website internationalization via a script tag, without source code changes. Versions prior to 4.0.8 substitute {{key}} interpolation tokens inside src and href attribute values with the raw string returned by i18next.t(). The substitution logic in src/localize.js (the replaceInside handler) only guards against a duplicated http:// origin prefix \u2014 it does not validate the URL scheme of the substituted value. A translated value such as javascript:alert(1) or data:text/html,\u003cscript\u003e...\u003c/script\u003e is applied unchanged to the live DOM attribute when an attacker can influence the content of a translation file or the translation-backend response \u2014 for example, via a compromised translation CDN, user-contributed locales, a MITM on a plain-HTTP backend, or write access to the translation JSON. This issue was patched in version 4.0.8."
    }
  ],
  "id": "CVE-2026-41692",
  "lastModified": "2026-05-29T15:08:21.560",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
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  "published": "2026-05-07T21:16:29.717",
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      "source": "security-advisories@github.com",
      "tags": [
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      "url": "https://github.com/i18next/i18nextify/commit/16f23dbcdcf893673587f7a03355bf7ce0a0e49e"
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          "value": "CWE-79"
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          "value": "CWE-94"
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