CVE-2026-60031: Quix Page Builder Information Disclosure

CVE-2026-60031 Overview

CVE-2026-60031 is an information disclosure vulnerability in the Quix Page Builder Pro extension for Joomla, developed by themexpert.com. Versions prior to 6.2.1 return raw exception details in AJAX handler responses. Attackers can query these endpoints without authentication and receive internal error data.

The flaw is categorized under [CWE-200] Exposure of Sensitive Information to an Unauthorized Actor. Exposed exception traces can reveal file paths, framework internals, and database structure. This information supports reconnaissance for follow-on attacks against the Joomla site.

Critical Impact
Unauthenticated remote attackers can retrieve raw exception data from AJAX endpoints, exposing internal application details useful for further exploitation.

Affected Products

Themexpert Quix Page Builder Pro versions prior to 6.2.1
Joomla installations with the vulnerable extension enabled
Web servers exposing the Quix AJAX handler endpoints

Discovery Timeline

2026-07-20 - CVE-2026-60031 published to NVD
2026-07-23 - Last updated in NVD database

Technical Details for CVE-2026-60031

Vulnerability Analysis

The Quix Page Builder Pro extension exposes AJAX handlers used by the Joomla front and back end. When these handlers encounter runtime errors, they reflect the raw exception object into the HTTP response. The response body contains stack traces, class names, and file system paths from the underlying PHP application.

Attackers can trigger these code paths by sending malformed or unexpected input to the AJAX endpoints. No authentication is required, and the attack executes over the network with low complexity. The disclosed data reduces the effort required for targeted exploitation of the host stack.

Root Cause

The root cause is missing error handling and output sanitization in the AJAX response layer. The extension serializes exception objects directly rather than returning generic error messages. Debug-oriented error output is enabled in production code paths, which violates least-information principles.

Attack Vector

Exploitation requires only network access to the vulnerable Joomla site. An attacker issues HTTP requests to the Quix AJAX handler with parameters that force an internal exception. The server responds with a JSON or text payload containing exception details.

Reference: Themexpert Quix Pagebuilder Overview

No public proof-of-concept code is available. The EPSS score is 0.253% at the 16.787 percentile as of 2026-07-23, indicating low near-term exploitation probability.

Detection Methods for CVE-2026-60031

Indicators of Compromise

HTTP responses from Joomla AJAX endpoints containing PHP stack traces, Exception class names, or absolute file paths
Repeated requests to Quix Page Builder AJAX handlers with malformed parameters from a single source
200-status responses with unusually large error payloads returned from index.php?option=com_quix or related endpoints

Detection Strategies

Inspect outbound HTTP responses for exception signatures such as Stack trace:, Fatal error, or PHP class namespaces
Correlate web server access logs against known Quix AJAX routes for anomalous parameter fuzzing patterns
Deploy web application firewall rules that flag responses containing serialized exception fields

Monitoring Recommendations

Monitor Joomla application logs for uncaught exception events tied to Quix components
Track request rate and parameter entropy on Quix AJAX endpoints to identify reconnaissance activity
Retain full request and response bodies for the affected endpoints to support post-incident analysis

How to Mitigate CVE-2026-60031

Immediate Actions Required

Upgrade Quix Page Builder Pro to version 6.2.1 or later on all Joomla installations
Disable PHP display_errors and set error_reporting to log-only in production php.ini
Audit web server and application logs for prior exposure of exception content to external clients

Patch Information

Themexpert addressed the issue in Quix Page Builder Pro version 6.2.1. Administrators should apply the update through the Joomla Extension Manager or by downloading the current release from the vendor. Verify the installed version under Joomla's Extensions administration panel after the upgrade.

Workarounds

Restrict access to Quix AJAX endpoints via web server rules until the patch is applied
Deploy a reverse proxy or WAF policy that strips response bodies matching PHP exception patterns
Temporarily disable the Quix Page Builder extension on sites that cannot be updated immediately

bash

# Example nginx rule to block responses containing exception traces
location ~* /index\.php {
    proxy_pass http://backend;
    proxy_hide_header X-Powered-By;
    sub_filter 'Stack trace:' '';
    sub_filter_once off;
}