CVE-2026-48527: 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)…

PriorityP343high8.7CVSS 3.1

AVNACLPRLUIRSCCHIHAN

EPSS

0.23%

13.5th percentile

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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
haxtheweb	haxcms-nodejs	< 26.0.1	26.0.1
haxtheweb	haxcms-nodejs	>= 0 < 26.0.1	26.0.1
haxtheweb	haxcms-php	< 26.0.2	26.0.2

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