CVE-2025-47487: MC Woocommerce Wishlist XSS Vulnerability

CVE-2025-47487 Overview

CVE-2025-47487 is a Reflected Cross-Site Scripting (XSS) vulnerability affecting the MC Woocommerce Wishlist plugin (smart-wishlist-for-more-convert) for WordPress, developed by Moreconvert Team. This vulnerability arises 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 execute arbitrary JavaScript in user browsers, potentially stealing session cookies, credentials, or performing actions on behalf of authenticated users including WooCommerce store administrators.

Affected Products

• MC Woocommerce Wishlist (smart-wishlist-for-more-convert) versions up to and including 1.9.1
• WordPress installations running the vulnerable plugin versions
• WooCommerce stores utilizing the wishlist functionality

Discovery Timeline

• 2025-06-09 - CVE-2025-47487 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-47487

Vulnerability Analysis

This Reflected XSS vulnerability (CWE-79) occurs when the MC Woocommerce Wishlist plugin fails to properly sanitize user-supplied input before reflecting it back in the web page output. When a user clicks a maliciously crafted link, the injected script executes within their browser session with full access to the page's DOM and any authenticated session data.

The attack requires user interaction—specifically, the victim must be tricked into clicking a specially crafted URL containing the malicious payload. Upon clicking, the script executes in the security context of the vulnerable WordPress site, enabling attackers to perform various malicious actions including session hijacking, credential theft, or unauthorized actions within the WooCommerce store.

Root Cause

The vulnerability stems from insufficient input validation and output encoding within the plugin's request handling mechanisms. User-controlled data is incorporated into the HTML response without proper sanitization or contextual output encoding, violating secure coding practices for web applications. This allows specially crafted input containing JavaScript code to be interpreted and executed by the browser rather than being rendered as harmless text.

Attack Vector

The attack is network-based and requires no authentication on the part of the attacker. The exploitation scenario typically involves:

1. An attacker crafts a malicious URL containing XSS payload targeting a vulnerable parameter in the MC Woocommerce Wishlist plugin
2. The attacker distributes this URL via phishing emails, social media, or other channels
3. When an authenticated user (particularly store administrators) clicks the link, the malicious script executes
4. The script can then access session tokens, perform actions as the authenticated user, or redirect to malicious sites

The vulnerability is particularly concerning for WooCommerce stores as it could enable attackers to access customer data, manipulate orders, or compromise administrative accounts.

Detection Methods for CVE-2025-47487

Indicators of Compromise

• Unusual URL parameters containing encoded JavaScript or HTML tags in requests to wishlist-related endpoints
• Server logs showing requests with suspicious payloads targeting the smart-wishlist-for-more-convert plugin paths
• Reports from users about unexpected browser behavior or redirects when using wishlist features
• Web Application Firewall (WAF) alerts for XSS patterns in requests to WordPress plugin endpoints

Detection Strategies

• Deploy Web Application Firewall (WAF) rules to detect and block common XSS payloads in URL parameters
• Enable detailed logging for WordPress plugin requests and monitor for suspicious patterns
• Implement Content Security Policy (CSP) headers to mitigate the impact of successful XSS attacks
• Utilize browser-based XSS auditors and security headers to provide defense-in-depth

Monitoring Recommendations

• Monitor web server access logs for requests containing <script>, javascript:, onerror, or other XSS indicators targeting wishlist plugin endpoints
• Set up alerts for unusual patterns of requests to the MC Woocommerce Wishlist plugin paths
• Review WordPress security logs for any unauthorized administrative actions that may indicate successful exploitation
• Implement real-time monitoring for CSP violation reports which may indicate XSS attempt activity

How to Mitigate CVE-2025-47487

Immediate Actions Required

• Update MC Woocommerce Wishlist plugin to a patched version beyond 1.9.1 when available from the vendor
• If no patch is available, consider temporarily disabling the plugin until a fix is released
• Implement WAF rules to filter potential XSS payloads targeting the plugin's endpoints
• Review access logs for evidence of exploitation attempts and investigate any suspicious activity

Patch Information

Organizations should monitor the Patchstack WordPress Vulnerability Report for updates on patch availability and remediation guidance. Check the WordPress plugin repository for updated versions of MC Woocommerce Wishlist that address this vulnerability. Until a patch is available, implement the workarounds below to reduce risk exposure.

Workarounds

• Implement strict Content Security Policy (CSP) headers to prevent inline script execution and mitigate XSS impact
• Deploy a Web Application Firewall with XSS protection rules enabled for WordPress sites
• Restrict access to WordPress administrative functions to trusted IP addresses where possible
• Educate users and administrators about phishing risks and the importance of not clicking suspicious links
• Consider using a WordPress security plugin that provides real-time XSS protection and monitoring

# Example Apache configuration for Content Security Policy
# Add to .htaccess or virtual host configuration
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; frame-ancestors 'self';"

# Enable X-XSS-Protection header as additional defense layer
Header set X-XSS-Protection "1; mode=block"

# Prevent MIME type sniffing
Header set X-Content-Type-Options "nosniff"