CVE-2026-48527 HIGH

CVE-2026-48527: HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint

Vendor Haxtheweb
Product haxcms-nodejs
Weakness CWE-79 · XSS
Published May 29, 2026
Last update May 29, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 29, 2026 CVE published
May 29, 2026 Record updated