CVE-2026-48527
High
Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue.
SeverityHigh
CVSS8.7
Exploit probability—
Product@haxtheweb/haxcms-nodejs
PublishedMay 29, 2026
First seenMay 29, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- @haxtheweb/haxcms-nodejs26.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @haxtheweb/haxcms-nodejsnpm | v < 26.0.1 | 26.0.1 |
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