Stored XSS via <iframe> in HAX CMS allows access to sensitive client-side data and account takeover — CVE-2026-46396

Summary

### Summary A stored cross-site scripting (XSS) vulnerability exists in HAX CMS due to improper sanitization of `<iframe>` elements. The application allows `javascript:` URIs in the `src` attribute, which are executed when a malicious page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data exposed to client-side scripts. ### Details…

Product

npm: @haxtheweb/haxcms-nodejs | npm: @haxtheweb/video-player | npm: @haxtheweb/iframe-loader

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

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