CVE-2024-1234: Exclusive Addons for Elementor XSS Flaw

CVE-2024-1234 Overview

The Exclusive Addons for Elementor plugin for WordPress contains a Stored Cross-Site Scripting (XSS) vulnerability in all versions up to and including 2.6.9. The vulnerability exists due to insufficient input sanitization and output escaping in data attributes, allowing authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts execute whenever a user accesses an injected page, potentially leading to session hijacking, credential theft, or further compromise of the WordPress installation.

Critical Impact

Authenticated attackers with contributor privileges can inject persistent malicious scripts that execute in the browsers of all users viewing affected pages, potentially compromising administrator sessions and enabling full site takeover.

Affected Products

• Exclusive Addons for Elementor versions up to and including 2.6.9
• WordPress installations using the vulnerable plugin versions
• All sites where contributor or higher access has been granted to untrusted users

Discovery Timeline

• March 13, 2024 - CVE-2024-1234 published to NVD
• January 23, 2025 - Last updated in NVD database

Technical Details for CVE-2024-1234

Vulnerability Analysis

This Stored Cross-Site Scripting (XSS) vulnerability (CWE-79) occurs within the Exclusive Addons for Elementor plugin's handling of data attributes. The plugin fails to properly sanitize user-supplied input and escape output when rendering certain data attributes within Elementor widgets. This allows an attacker with at least contributor-level access to embed malicious JavaScript code that persists in the WordPress database and executes in the context of any user's browser session when they view the affected page.

The attack requires authentication with at least contributor privileges, meaning the attacker needs some level of existing access to the WordPress installation. However, contributor accounts are commonly granted to guest authors or less trusted users, making this a significant attack surface in multi-author WordPress environments.

Root Cause

The root cause of this vulnerability is the lack of proper input sanitization and output escaping mechanisms within the plugin's data attribute handling. When user-controlled data is stored and later rendered without appropriate encoding, it creates an opportunity for script injection. The plugin should implement WordPress's built-in sanitization functions such as wp_kses(), esc_attr(), or esc_html() to prevent malicious script execution.

Attack Vector

The attack vector is network-based and requires user interaction. An authenticated attacker with contributor-level access or above can craft a malicious payload within the Elementor editor using the vulnerable plugin's widgets or elements. The payload is stored in the WordPress database and subsequently rendered without proper escaping when any user—including administrators—views the page containing the injected content. The malicious script then executes with the privileges of the viewing user's session, potentially allowing cookie theft, session hijacking, defacement, or further exploitation.

Detection Methods for CVE-2024-1234

Indicators of Compromise

• Unexpected JavaScript code or suspicious <script> tags within page content or Elementor widget data
• Unusual network requests originating from WordPress pages to external domains
• Reports from users experiencing unexpected behavior such as redirects or pop-ups when viewing specific pages
• Suspicious modifications to Elementor widget configurations by contributor-level accounts

Detection Strategies

• Review WordPress database entries for Elementor content containing potential XSS payloads such as javascript:, onerror=, onload=, or encoded script sequences
• Monitor web application firewall (WAF) logs for XSS attack patterns targeting WordPress pages
• Implement Content Security Policy (CSP) headers and monitor for violations that may indicate script injection attempts
• Audit user activity logs for suspicious content modifications by contributor accounts

Monitoring Recommendations

• Enable detailed logging of all content modifications made through the Elementor editor
• Deploy a WordPress security plugin with real-time malware and injection scanning capabilities
• Configure alerts for CSP violations and unexpected inline script execution
• Regularly review contributor-level user accounts and their recent activity

How to Mitigate CVE-2024-1234

Immediate Actions Required

• Update Exclusive Addons for Elementor to version 2.7.0 or later immediately
• Audit all existing Elementor pages for potentially injected malicious scripts
• Review and restrict contributor-level access to only trusted users
• Implement a Web Application Firewall (WAF) with XSS filtering capabilities

Patch Information

The vendor has released a security patch addressing this vulnerability. The fix is available in the WordPress Changeset Update which implements proper input sanitization and output escaping for data attributes. Users should update to the patched version through the WordPress plugin update mechanism or by downloading the latest version from the WordPress plugin repository.

Additional technical details are available in the Wordfence Vulnerability Report.

Workarounds

• Temporarily demote or remove contributor-level access for untrusted users until the plugin is updated
• Implement strict Content Security Policy (CSP) headers to mitigate the impact of any successful XSS injection
• Use a WordPress security plugin to scan for and block XSS attempts at the application level
• If unable to update immediately, consider temporarily deactivating the Exclusive Addons for Elementor plugin

# WordPress CLI command to update the plugin
wp plugin update exclusive-addons-for-elementor

# Verify the installed version after update
wp plugin list --name=exclusive-addons-for-elementor --fields=name,version,status