CVE-2026-46396 CRITICAL

CVE-2026-46396: HAX CMS has a stored XSS via <iframe> that allows access to sensitive client-side data and account takeover

Vendor Haxtheweb
Product haxcms-nodejs
Weakness CWE-79 · XSS
Published June 5, 2026
Last update June 9, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N

What the vulnerability does

01Description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 26.0.0 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. Version 26.0.0 fixes the issue.

Key dates

02Disclosure timeline

June 5, 2026 CVE published
June 9, 2026 Record updated