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Vulnerability record · CVE-2026-48527 · published 29 May 2026

CVE-2026-48527: Cross-site scripting vulnerability

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.

8.7 CVSS 3.1 High EPSS 0.37% · top 71.2% CWE-79 · Cross-site scripting Deferred
8.7CVSS 3.1 base score
0.37%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
21 Jul 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h
https://github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35h

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Source: NIST National Vulnerability Database (record CVE-2026-48527), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.