Start your free trial today.

Protect your organization with cutting-edge cybersecurity solutions designed for resilience and efficiency. Secure your digital assets with confidence.

Your Shield Against Threats

Unleash the Power of Cybersecurity

Boost Your Security, Enhance Your Business

We solve Your Cyber Challenges

Quick Links

Resources

Deepaegis Portals

Vulnerability Advisory : i18nextify is vulnerable to DOM XSS via javascript:/data: URL schemes in translated href/src attributes with HIGH Attack Complexity

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.

Impact Assessment

Timeline

Published

May 7, 2026

Last Modified

May 7, 2026

Related Advisories

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.","datePublished":"2026-05-07T21:16:29.717Z","dateModified":"2026-05-07T21:16:29.717Z","author":{"@type":"Organization","name":"Deepaegis","url":"https://deepaegis?.io"},"publisher":{"@type":"Organization","name":"Deepaegis","logo":{"@type":"ImageObject","url":"https://deepaegis?.io/logo?.png"}},"mainEntityOfPage":{"@type":"WebPage","@id":"https://deepaegis?.io/vulnerability-advisories/i18nextify-is-vulnerable-to-dom-xss-via-javascriptdata-url-schemes-in-translated-hrefsrc-attributes"},"keywords":"CVE-2026-41692, , i18next, i18nextify"}