haxtheweb haxcms-nodejs/haxcms-php up to 25.x Setting connectionSettings cross site scripting

Summaryinfo

A vulnerability was found in haxtheweb haxcms-nodejs and haxcms-php up to 25.x. It has been declared as problematic. The affected element is an unknown function of the file /system/api/connectionSettings of the component Setting Handler. Such manipulation leads to cross site scripting. This vulnerability is referenced as CVE-2026-46511. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in haxtheweb haxcms-nodejs and haxcms-php up to 25.x. It has been rated as problematic. Affected by this issue is some unknown processing of the file /system/api/connectionSettings of the component Setting Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-46511 since 05/14/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

Upgrading to version 26.0.0 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Vendor

• haxtheweb

Name

• haxcms-nodejs
• haxcms-php

Version

• 25.x

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

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