CVE-2026-46511: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in haxtheweb haxcms-nodejs
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.
AI Analysis
Technical Summary
The vulnerability in haxcms-nodejs (before version 26.0.0) involves improper neutralization of input during web page generation (CWE-79), leading to stored XSS. The /system/api/connectionSettings endpoint dynamically exposes active session authentication tokens (jwt, user_token, site_token, appstore_token) in the global JavaScript variable window.appSettings. An authenticated attacker can exploit the stored XSS to execute malicious scripts in the victim's browser, forcing it to fetch connection settings, extract tokens, and send them to an attacker-controlled webhook. This results in a full cross-tenant account takeover. The issue is patched in version 26.0.0.
Potential Impact
Successful exploitation allows an authenticated attacker to perform a complete cross-tenant account takeover by stealing sensitive authentication tokens from victim sessions. This compromises user accounts and potentially the integrity and confidentiality of tenant data within the affected haxcms-nodejs installations.
Mitigation Recommendations
A fix is available in haxcms-nodejs version 26.0.0. Users should upgrade to this version or later to remediate the vulnerability. No additional vendor advisory content is provided, so patch status beyond this is not confirmed. Patch status is not yet confirmed beyond the stated version update — check the vendor advisory for current remediation guidance.
CVE-2026-46511: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in haxtheweb haxcms-nodejs
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.
CVSS v4.0
Score 8.7high
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in haxcms-nodejs (before version 26.0.0) involves improper neutralization of input during web page generation (CWE-79), leading to stored XSS. The /system/api/connectionSettings endpoint dynamically exposes active session authentication tokens (jwt, user_token, site_token, appstore_token) in the global JavaScript variable window.appSettings. An authenticated attacker can exploit the stored XSS to execute malicious scripts in the victim's browser, forcing it to fetch connection settings, extract tokens, and send them to an attacker-controlled webhook. This results in a full cross-tenant account takeover. The issue is patched in version 26.0.0.
Potential Impact
Successful exploitation allows an authenticated attacker to perform a complete cross-tenant account takeover by stealing sensitive authentication tokens from victim sessions. This compromises user accounts and potentially the integrity and confidentiality of tenant data within the affected haxcms-nodejs installations.
Mitigation Recommendations
A fix is available in haxcms-nodejs version 26.0.0. Users should upgrade to this version or later to remediate the vulnerability. No additional vendor advisory content is provided, so patch status beyond this is not confirmed. Patch status is not yet confirmed beyond the stated version update — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-14T19:12:32.754Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a231d8ee29bf47b50a98418
Added to database: 6/5/2026, 7:03:42 PM
Last enriched: 6/5/2026, 7:18:36 PM
Last updated: 6/5/2026, 8:05:16 PM
Views: 7
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