Vulnerability Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettings` endpoint allows an authenticated attacker to perform a complete cross-tenant account takeover. The API dynamically leaks the active session's authentication tokens (including the `jwt`, `user_token`, `site_token`, and `appstore_token`) into a global JavaScript variable (`window.appSettings`). An attacker can exploit the XSS vulnerability to force a victim's browser to silently fetch their specific connection settings, extract the tokens, and exfiltrate them to an attacker-controlled webhook. Version 26.0.0 patches the issue.
Related Weaknesses (CWE)
References
- https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg
- https://github.com/haxtheweb/issues/security/advisories/GHSA-x3x5-7h4h-gwxg
FAQ
What is CVE-2026-46511?
CVE-2026-46511 is a documented vulnerability. HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, an attack chain utilizing Stored XSS alongside dynamic token exposure in the `/system/api/connectionSettin...
How severe is CVE-2026-46511?
CVSS scoring is not yet available for CVE-2026-46511. Check NVD for updates.
Is there a patch for CVE-2026-46511?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.