CVE-2025-49137CWE-79CWE-80CWE-87

Hax CMS Stored Cross-Site Scripting vulnerability

High · published June 9, 2025

CVSS v3.1
8.5
EPSS
0%
Percentile
18.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00275 · 18.9th percentile
Weaknesses
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'); CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS); CWE-87 · Improper Neutralization of Alternate XSS Syntax
Published
2025-06-09T21:00Z
EPSS history
Timeline
  • 09 JUN 21:00Z
    Hax CMS Stored Cross-Site Scripting vulnerability
    cvelistv5