CVE-2025-49137 HIGH

CVE-2025-49137: Hax CMS Stored Cross-Site Scripting vulnerability

Vendor Haxtheweb
Product issues
Weakness CWE-79 · XSS
Published June 9, 2025
Last update June 10, 2025

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

What the vulnerability does

01Description

HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, the application does not sufficiently sanitize user input, allowing for the execution of arbitrary JavaScript code. The 'saveNode' and 'saveManifest' endpoints take user input and store it in the JSON schema for the site. This content is then rendered in the generated HAX site. Although the application does not allow users to supply a `script` tag, it does allow the use of other HTML tags to run JavaScript. Version 11.0.0 fixes the issue.

Key dates

02Disclosure timeline

June 9, 2025 CVE published
June 10, 2025 Record updated