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CVE-2026-46511GHSA-X3X5-7H4H-GWXG

HAXcms: Mass Token Exfiltration and Cross-Tenant Hijack

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 26.0.0
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: poc
  • Automatable: no
  • Technical impact: total

Summary

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.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: poc · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • haxtheweb haxcms-nodejs

    fixed in 26.0.0

  • haxtheweb haxcms-php

    fixed in 26.0.0

  • @haxtheweb/haxcms-nodejsnpm

    fixed in 26.0.0

References 1

GitHub · haxtheweb/issues