Description
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.
Scores
CVSS v3
8.5
EPSS
0.0028
EPSS Percentile
51.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-80
CWE-79
CWE-87
Status
published
Products (3)
elmsln/haxcms
0 - 11.0.0Packagist
psu/haxcms-nodejs
< 11.0.0
psu/haxcms-php
< 11.0.0
Published
Jun 09, 2025
Tracked Since
Feb 18, 2026