CVE-2026-58078: Quix Page Builder Pro SQLi Vulnerability

CVE-2026-58078 Overview

CVE-2026-58078 is an unauthenticated SQL injection vulnerability in the Quix Page Builder Pro extension for Joomla. The flaw allows remote attackers to inject arbitrary SQL statements through the extension's request handling without providing valid credentials. Successful exploitation exposes the underlying Joomla database, including administrator credential hashes, session data, and content records. The vulnerability is classified under CWE-89 (Improper Neutralization of Special Elements used in an SQL Command).

Critical Impact
Unauthenticated attackers can extract, modify, or delete Joomla database contents over the network, leading to full site compromise.

Affected Products

Joomla Content Management System (CMS)
Quix Page Builder Pro extension by ThemeXpert
Joomla sites with Quix Pro installed and reachable over the network

Discovery Timeline

2026-07-16 - CVE-2026-58078 published to the National Vulnerability Database (NVD)
2026-07-16 - Last updated in NVD database

Technical Details for CVE-2026-58078

Vulnerability Analysis

Quix Page Builder Pro is a commercial visual page builder used by Joomla site administrators to construct pages, layouts, and templates. The extension exposes request handlers that accept user-controlled parameters and pass them into database queries. One or more of these handlers do not perform parameterized queries or proper input escaping before executing SQL statements against the Joomla database.

Because the vulnerable code path is reachable without authentication, an attacker can send crafted HTTP requests directly to a Joomla instance that has Quix Pro installed. The MySites Guru disclosure describes the issue as an unauthenticated SQL injection affecting Quix Page Builder Pro deployments. See the MySites Guru SQL Injection Disclosure for the researcher's technical write-up and the ThemeXpert Quix Pagebuilder Overview for product context.

Root Cause

The root cause is missing or insufficient input validation and parameterization within Quix Pro request handlers that build SQL queries from HTTP parameters. User-supplied values are concatenated into query strings rather than bound as parameters, which allows attackers to break out of the intended query context and append additional SQL clauses.

Attack Vector

Exploitation occurs over the network against the vulnerable Joomla endpoint. The CVSS 4.0 vector indicates that user interaction is required for exploitation, suggesting an attacker may need a victim to trigger a request or visit an attacker-controlled resource. Once triggered, the injection yields high impact to confidentiality, integrity, and availability of the affected database.

No verified proof-of-concept exploit code is published in the referenced advisories. Refer to the MySites Guru SQL Injection Disclosure for exploitation details as released by the researcher.

Detection Methods for CVE-2026-58078

Indicators of Compromise

HTTP requests to Quix Pro endpoints containing SQL metacharacters such as ', ", UNION SELECT, SLEEP(, or information_schema
Unexpected outbound queries or errors in the Joomla or MySQL/MariaDB error logs referencing Quix component tables
New or modified Joomla administrator accounts and unexpected changes to the #__users table
Web server access log entries showing long, URL-encoded query strings directed at index.php?option=com_quix or related Quix routes

Detection Strategies

Inspect web server access logs for anomalous parameters targeting Quix component routes and correlate with database error responses
Deploy web application firewall (WAF) signatures for common SQL injection payloads on paths handled by the Quix extension
Monitor database query logs for statements originating from the Joomla web user that reference information_schema, sleep(), or unusual UNION operations
Baseline legitimate Quix Pro request patterns and alert on deviations in parameter length, encoding, or character sets

Monitoring Recommendations

Enable Joomla's system logging and forward web, application, and database logs to a centralized SIEM for correlation
Alert on repeated HTTP 500 responses from Quix endpoints, which frequently accompany blind SQL injection probing
Track authentication events for the Joomla admin console and flag logins that follow suspicious Quix request activity

How to Mitigate CVE-2026-58078

Immediate Actions Required

Identify all Joomla sites that have Quix Page Builder Pro installed and inventory the installed version
Restrict network access to affected Joomla admin and Quix endpoints from the public internet where feasible
Rotate Joomla administrator passwords and invalidate active sessions if exploitation is suspected
Review the #__users, #__session, and Quix-specific tables for unauthorized modifications

Patch Information

Apply the vendor-supplied update for Quix Page Builder Pro as soon as it is released by ThemeXpert. Consult the ThemeXpert Quix Pagebuilder Overview and the MySites Guru SQL Injection Disclosure for the fixed version and update instructions. Confirm the patch is applied on every Joomla instance in the environment and validate the extension version through the Joomla administrator interface.

Workarounds

Temporarily disable or uninstall the Quix Page Builder Pro extension until a patched version is applied
Deploy a WAF rule that blocks SQL injection patterns targeting com_quix request parameters
Enforce least-privilege permissions on the Joomla database user to limit the impact of a successful injection

bash

# Example WAF rule concept for blocking SQL metacharacters on Quix endpoints
# Adjust to your WAF syntax (ModSecurity example)
SecRule REQUEST_URI "@contains com_quix" \
  "phase:2,deny,status:403,id:1058078,\
   chain,msg:'Potential SQLi against Quix Pro (CVE-2026-58078)'"
  SecRule ARGS "@rx (?i)(union(\s|/\*.*?\*/)+select|information_schema|sleep\s*\(|benchmark\s*\(|--\s|;--)" "t:none,t:urlDecodeUni"