CVE-2025-67964: Homey Core XSS Vulnerability

CVE-2025-67964 Overview

A Reflected Cross-Site Scripting (XSS) vulnerability has been identified in the favethemes Homey Core WordPress plugin (homey-core). This vulnerability stems from improper neutralization of input during web page generation, allowing attackers to inject malicious scripts that execute in the context of a victim's browser session.

Critical Impact

Attackers can exploit this Reflected XSS vulnerability to steal session cookies, redirect users to malicious websites, deface web pages, or perform actions on behalf of authenticated users within affected WordPress installations.

Affected Products

• Homey Core WordPress Plugin versions through 2.4.3
• WordPress sites utilizing the Homey Core plugin for property rental functionality
• Any downstream themes or plugins that depend on Homey Core

Discovery Timeline

• 2026-01-22 - CVE-2025-67964 published to NVD
• 2026-01-22 - Last updated in NVD database

Technical Details for CVE-2025-67964

Vulnerability Analysis

This vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation), commonly known as Cross-Site Scripting. The Homey Core plugin fails to properly sanitize user-supplied input before reflecting it back to the user's browser, creating an opportunity for attackers to inject arbitrary JavaScript code.

Reflected XSS attacks require social engineering to trick victims into clicking a malicious link containing the payload. Once executed, the injected script runs with the same privileges as the legitimate site content, potentially compromising user sessions and sensitive data.

Root Cause

The root cause of this vulnerability lies in insufficient input validation and output encoding within the Homey Core plugin. When user-controlled data is processed and rendered in the browser without proper sanitization, it allows malicious payloads to be interpreted as executable code rather than harmless text content.

WordPress plugins that handle user input through URL parameters, form fields, or AJAX requests are particularly susceptible to this type of vulnerability when developers fail to implement proper escaping functions such as esc_html(), esc_attr(), or wp_kses().

Attack Vector

The attack vector for this Reflected XSS vulnerability involves crafting a malicious URL containing JavaScript payload parameters. When a victim clicks the link, the vulnerable Homey Core plugin reflects the unsanitized input back into the HTML response, causing the browser to execute the attacker's script.

A typical attack scenario involves the attacker creating a link with embedded JavaScript in a URL parameter. When the victim visits the page, the malicious script executes in their browser context, potentially allowing the attacker to steal authentication cookies, perform unauthorized actions, or redirect the user to a phishing site. For detailed technical information, refer to the Patchstack WordPress Vulnerability Report.

Detection Methods for CVE-2025-67964

Indicators of Compromise

• Suspicious URL parameters containing JavaScript code or HTML tags in access logs targeting Homey Core endpoints
• Unusual redirect patterns or external script loads originating from your WordPress site
• User reports of unexpected popups, alerts, or behavior when interacting with property listing pages
• Access log entries showing encoded characters such as %3Cscript%3E or javascript: in query strings

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block XSS payloads in URL parameters
• Enable Content Security Policy (CSP) headers to restrict script execution sources and detect policy violations
• Monitor server access logs for requests containing common XSS patterns like <script>, onerror=, onload=, or javascript:
• Deploy browser-based security monitoring to detect unexpected script execution or DOM modifications

Monitoring Recommendations

• Configure real-time alerting for WAF XSS detection events targeting WordPress installations
• Implement log aggregation and analysis for identifying XSS attack patterns across your WordPress infrastructure
• Regularly audit WordPress plugin versions and compare against known vulnerability databases
• Enable CSP reporting to capture and analyze blocked script execution attempts

How to Mitigate CVE-2025-67964

Immediate Actions Required

• Update the Homey Core plugin to the latest available version that addresses this vulnerability
• Review and audit any custom code that interacts with the Homey Core plugin for proper input sanitization
• Implement Content Security Policy headers to mitigate the impact of successful XSS exploitation
• Consider temporarily disabling the Homey Core plugin if no patch is available and functionality is not critical

Patch Information

Administrators should check for updates to the Homey Core plugin through the WordPress admin dashboard or by visiting the official plugin repository. The vulnerability affects versions through 2.4.3, so ensure you are running a version newer than this that includes the security fix. Monitor the Patchstack vulnerability report for updates on available patches.

Workarounds

• Deploy a Web Application Firewall with XSS filtering rules to block malicious requests before they reach the vulnerable plugin
• Implement strict Content Security Policy headers using directives like script-src 'self' to prevent inline script execution
• Use WordPress security plugins that provide input sanitization and XSS protection at the application level
• Restrict access to the WordPress admin area and limit user privileges to reduce potential impact

# Example Apache .htaccess CSP configuration for XSS mitigation
<IfModule mod_headers.c>
    Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';"
    Header set X-XSS-Protection "1; mode=block"
    Header set X-Content-Type-Options "nosniff"
</IfModule>