CVE-2026-60030: Quix Page Builder Auth Bypass Vulnerability

CVE-2026-60030 Overview

CVE-2026-60030 is a broken access control vulnerability [CWE-284] in the Quix Page Builder Pro extension for Joomla, developed by themexpert.com. The flaw affects Quix Page Builder versions prior to 6.2.1. Authenticated users can upload media files to the server regardless of whether they hold the required media management permissions. The issue impacts the confidentiality of the underlying Joomla site by exposing media upload functionality to unauthorized account tiers.

Critical Impact
Any authenticated Joomla user can upload media files through Quix Page Builder Pro, bypassing the extension's media management permission checks.

Affected Products

Themexpert Quix Page Builder Pro (Joomla extension) versions prior to 6.2.1
Joomla sites running vulnerable Quix Page Builder installations
Multi-user Joomla environments with low-privilege authenticated accounts

Discovery Timeline

2026-07-20 - CVE-2026-60030 published to the National Vulnerability Database (NVD)
2026-07-23 - Last updated in NVD database

Technical Details for CVE-2026-60030

Vulnerability Analysis

The vulnerability resides in the media handling component of Quix Page Builder Pro. The extension exposes media upload endpoints intended for users with dedicated media management permissions. However, the server-side authorization logic does not validate whether the requesting account actually holds those permissions before accepting an upload.

As a result, any authenticated Joomla account, including low-privilege roles, can upload arbitrary media files. This constitutes a broken access control condition classified under [CWE-284]. The vulnerability is reachable over the network without user interaction, which increases the exposure of any Joomla site that permits self-registration or hosts multiple contributor-level accounts.

Root Cause

The root cause is missing or incorrect permission enforcement on the media upload handler in Quix Page Builder versions before 6.2.1. Authentication is required, but authorization checks tied to the Joomla media management capability are absent or improperly evaluated. The application trusts the presence of a valid session rather than verifying the specific media-related privileges of the requesting user.

Attack Vector

An attacker first obtains any authenticated Joomla session on a vulnerable site. This can be achieved through legitimate registration on sites that allow it, through compromise of a low-privilege account, or through insider access. The attacker then submits an upload request to the Quix Page Builder media endpoint. The extension processes the upload without validating the account's media permissions, storing the file on the server.

See the Themexpert Quix Pagebuilder Overview for product context. No public proof-of-concept exploit is currently listed for this CVE.

Detection Methods for CVE-2026-60030

Indicators of Compromise

Media files appearing in the Joomla media library that were uploaded by accounts without documented media management permissions.
Unexpected files in Quix Page Builder upload directories, particularly with recent timestamps tied to non-privileged user IDs.
HTTP POST requests to Quix Page Builder media endpoints originating from low-privilege session cookies.

Detection Strategies

Audit Joomla user action logs for media upload events and correlate them against each user's assigned Access Control List (ACL) group.
Review web server access logs for POST requests to Quix Page Builder AJAX or REST endpoints handling file uploads.
Perform file integrity monitoring on Joomla media directories to identify files added outside of authorized administrative workflows.

Monitoring Recommendations

Enable Joomla's built-in User Actions Log and forward events to a centralized SIEM for correlation.
Alert on media upload events initiated by accounts in Registered, Author, or other non-media-manager ACL groups.
Monitor for newly created files with executable or script extensions in Quix Page Builder upload paths.

How to Mitigate CVE-2026-60030

Immediate Actions Required

Upgrade Quix Page Builder Pro to version 6.2.1 or later on all affected Joomla sites.
Review recent media library contents and remove files uploaded by unauthorized accounts.
Audit Joomla user accounts and disable or restrict registrations that are not required for site operations.

Patch Information

The vendor addresses the broken access control issue in Quix Page Builder version 6.2.1. Administrators should download the latest release from the vendor at the Themexpert Quix Pagebuilder Overview page and apply it through the Joomla extension manager. Verify the installed version under the Joomla Extensions Manager after upgrade.

Workarounds

Disable the Quix Page Builder extension until the 6.2.1 update can be applied on production sites.
Restrict Joomla user self-registration and require administrator approval for new accounts.
Apply a Web Application Firewall (WAF) rule to block requests to Quix media upload endpoints from non-administrative sessions.

bash

# Configuration example: verify installed Quix Page Builder version via Joomla CLI
php cli/joomla.php extension:list | grep -i quix

# Recommended: ensure version reported is >= 6.2.1