What is GHSA-gxrr-wfg5-xqqf?

GHSA-gxrr-wfg5-xqqf is a security advisory published by GitHub Security Advisories with Critical severity. The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload...

Which CVE IDs does GHSA-gxrr-wfg5-xqqf cover?

GHSA-gxrr-wfg5-xqqf covers the following CVE IDs: CVE-2026-56290. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-gxrr-wfg5-xqqf?

GHSA-gxrr-wfg5-xqqf has a CVSS v3 base score of 9.8, published by GitHub Security Advisories.

GHSA-gxrr-wfg5-xqqfCriticalCVSS 9.8

The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload...

Vendor

GitHub Security Advisories

Published

June 29, 2026

Last Modified

July 2, 2026

🔗 CVE IDs covered (1)

CVE-2026-56290 →

📋 Description

The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

🔗 References (5)

https://nvd.nist.gov/vuln/detail/CVE-2026-56290
https://www.joomlack.fr
https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3
https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce
https://github.com/advisories/GHSA-gxrr-wfg5-xqqf