CVE-2025-14040: Automotive Car Dealership Theme XSS Flaw

CVE-2025-14040 Overview

The Automotive Car Dealership Business WordPress Theme for WordPress contains a Stored Cross-Site Scripting (XSS) vulnerability in the 'Call to Action' custom fields. The vulnerability exists in all versions up to and including 13.4 due to insufficient input sanitization and output escaping on user-supplied attributes. Specifically, the action_text, action_button_text, action_link, and action_class custom fields fail to properly sanitize user input, allowing authenticated attackers with contributor-level permissions and above to inject arbitrary web scripts into pages.

Critical Impact

Authenticated attackers with contributor-level access can inject malicious JavaScript that executes whenever any user accesses an affected page, potentially leading to session hijacking, credential theft, and defacement of WordPress sites using this automotive dealership theme.

Affected Products

• Automotive Car Dealership Business WordPress Theme versions up to and including 13.4
• WordPress installations using the vulnerable theme
• Sites with contributor-level or higher user accounts

Discovery Timeline

• 2026-02-27 - CVE-2025-14040 published to NVD
• 2026-02-27 - Last updated in NVD database

Technical Details for CVE-2025-14040

Vulnerability Analysis

This Stored Cross-Site Scripting vulnerability occurs due to improper handling of user-supplied input in the theme's Call to Action custom fields. When users with contributor-level permissions or higher create or edit content, they can insert malicious payloads into the action_text, action_button_text, action_link, and action_class fields. These payloads are stored in the database and rendered without proper escaping when the page is viewed, causing the injected scripts to execute in the browser context of any visitor.

The vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). The attack can be conducted over the network without user interaction once the malicious content is injected. Since the payload is stored server-side, every subsequent page visit triggers script execution, making this a persistent XSS attack.

Root Cause

The root cause is insufficient input sanitization and output escaping in the theme's custom field handling. WordPress provides built-in functions such as esc_html(), esc_attr(), esc_url(), and wp_kses() for properly sanitizing and escaping user input. The Automotive Car Dealership Business theme fails to apply these security measures to the Call to Action custom fields, allowing raw user input to be rendered directly in the HTML output.

Attack Vector

The attack requires authentication with contributor-level permissions or higher. An attacker would create or edit a page/post containing the Call to Action fields and inject malicious JavaScript payloads into one or more of the vulnerable fields. The payload could include event handlers, script tags disguised through encoding, or other XSS vectors. Once saved, any user (including administrators) who views the injected page will have the malicious script execute in their browser, potentially compromising their session or exposing sensitive information.

For technical details on the exploitation mechanism, refer to the Wordfence Vulnerability Report.

Detection Methods for CVE-2025-14040

Indicators of Compromise

• Unusual JavaScript code present in Call to Action custom field values in the database
• Unexpected script tags or event handlers in the action_text, action_button_text, action_link, or action_class fields
• Reports from users experiencing unexpected browser behavior or redirects on specific pages
• Web application firewall logs showing XSS patterns in POST requests to page editing endpoints

Detection Strategies

• Implement database queries to audit Call to Action custom fields for script tags, event handlers (onclick, onmouseover, onerror, etc.), and javascript: URI schemes
• Deploy web application firewall rules to detect and block XSS payloads in requests targeting WordPress admin pages
• Enable WordPress audit logging to track changes made by contributor-level users to custom fields
• Use security scanning plugins to identify stored XSS patterns in post metadata

Monitoring Recommendations

• Monitor WordPress user activity logs for suspicious content modifications by contributor-level accounts
• Set up alerts for Content Security Policy (CSP) violations that may indicate XSS execution attempts
• Regularly audit custom field content in the wp_postmeta table for the affected field names
• Review browser console logs for JavaScript errors that may indicate failed XSS attempts

How to Mitigate CVE-2025-14040

Immediate Actions Required

• Update the Automotive Car Dealership Business WordPress Theme to a version higher than 13.4 that includes the security patch
• Audit existing content in Call to Action custom fields for malicious payloads and sanitize any suspicious entries
• Temporarily restrict contributor-level access until the patch is applied if immediate update is not possible
• Implement Content Security Policy headers to mitigate the impact of any stored XSS payloads

Patch Information

The vendor has released a patched version addressing this vulnerability. Users should update to the latest version available through ThemeForest. Review the changelog for details on the security fix. The patch implements proper input sanitization and output escaping for the affected custom fields.

Workarounds

• If immediate patching is not possible, restrict user permissions to prevent contributor-level accounts from editing pages with Call to Action fields
• Implement server-side input validation using a WordPress security plugin to filter dangerous HTML and JavaScript from custom fields
• Add custom output escaping by creating a child theme that properly sanitizes the Call to Action fields before rendering
• Deploy a Web Application Firewall (WAF) with XSS protection rules to block malicious payloads at the network level

# WordPress configuration - Add to wp-config.php to enhance security headers
# Note: This is a mitigation, not a fix. Update the theme as soon as possible.
@ini_set('session.cookie_httponly', true);
@ini_set('session.cookie_secure', true);
# Add Content Security Policy via .htaccess or server configuration
# Header set Content-Security-Policy "script-src 'self'; object-src 'none';"