High severity8.7NVD Advisory· Published May 29, 2026· Updated May 29, 2026

CVE-2026-48527

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

Package	Affected versions	Patched versions
@haxtheweb/haxcms-nodejsnpm	< 26.0.1	26.0.1

Affected products

ghsa-coords
pkg:npm/%40haxtheweb/haxcms-nodejs
Range: < 26.0.1

Patches

Vulnerability mechanics

References

github.com/advisories/GHSA-g2g8-95qg-v35hghsaADVISORY
nvd.nist.gov/vuln/detail/CVE-2026-48527ghsaADVISORY
github.com/haxtheweb/issuesghsaPACKAGE
github.com/haxtheweb/issues/security/advisories/GHSA-g2g8-95qg-v35hnvdWEB

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