CVE-2026-63048
Received Received - Intake

Authenticated Arbitrary File Upload in Page Builder CK for Joomla

Publication date: 2026-07-22

Last updated on: 2026-07-22

Assigner: Joomla! Project

Description
The Joomla extension Page Builder CK is vulnerable to an authenticated arbitrary file upload, leading to RCE.

CVSS Scores

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Meta Information

Published
2026-07-22
Last Modified
2026-07-22
Generated
2026-07-22
AI Q&A
2026-07-22
EPSS Evaluated
N/A
NVD
CVE-2026-63048
EUVD
EUVD-2026-47618

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
joomla page_builder_ck *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Attack-Flow Graph

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Executive Summary

This vulnerability is an authenticated arbitrary file upload flaw in the Joomla extension Page Builder CK. It allows attackers with valid credentials to upload malicious files, which can lead to remote code execution (RCE) on the affected system.

Detection Guidance

Check for unauthorized file uploads in Joomla's Page Builder CK extension directories. Look for unexpected PHP or executable files in /administrator/components/com_pagebuilderck/uploads/ or similar paths. Review server logs for POST requests to com_pagebuilderck endpoints with file uploads.

Impact Analysis

An attacker could exploit this to gain control over your Joomla site, steal data, install malware, or use the server for further attacks. The high CVSS score (9.4) indicates severe impact.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations may face fines or legal consequences if exploited.

Mitigation Strategies

Disable or uninstall the Page Builder CK extension immediately. Update to the latest patched version if available. Restrict file upload permissions in Joomla configuration. Monitor for suspicious activity and review user accounts with upload privileges.

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