Stored Cross-Site Scripting (XSS) Vulnerability in HAX CMS by HAX The Web
CVE-2026-48527

8.7HIGH

Key Information:

Vendor

Haxtheweb

Status
Haxcms-nodejs
Haxcms-PHP
Vendor
CVE Published:
29 May 2026

What is CVE-2026-48527?

HAX CMS, utilized for managing microsites with PHP or NodeJs backends, is affected by a stored cross-site scripting vulnerability in the /system/api/saveNode endpoint. This vulnerability allows authenticated users with page editing permissions to exploit the system by injecting malicious event handler attributes without leading whitespace, thus bypassing the intended HTML sanitizer. The issue has been addressed in haxcms-nodejs version 26.0.1 and haxcms-php version 26.0.2, which users are recommended to upgrade to in order to secure their applications.

Affected Version(s)

haxcms-nodejs < 26.0.1

haxcms-php < 26.0.2

References

https://github.com/haxtheweb/issues/security/advisories/G...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.