CVE-2025-67542
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in SilkyPress Multi-Step Checkout for WooCommerce allows attackers to inject malicious scripts into web pages viewed by users. It affects WordPress sites using this plugin, potentially compromising user sessions and data. All users of affected plugin versions are vulnerable.
💻 Affected Systems
- SilkyPress Multi-Step Checkout for WooCommerce
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, hijack user sessions, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers steal user session cookies or credentials, perform actions on behalf of users, or inject malicious content into checkout pages.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing exploitation.
🎯 Exploit Status
DOM-based XSS typically requires user interaction but can be exploited via crafted links or forms. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.34 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Multi-Step Checkout for WooCommerce'. 4. Click 'Update Now' if update available. 5. Alternatively, download version 2.34+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Multi-Step Checkout plugin until patched
wp plugin deactivate wp-multi-step-checkout
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "script-src 'self'"
Or add to WordPress functions.php: header("Content-Security-Policy: script-src 'self'");
🧯 If You Can't Patch
- Disable the Multi-Step Checkout plugin entirely and use WooCommerce's default checkout
- Implement a Web Application Firewall (WAF) with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for 'Multi-Step Checkout for WooCommerce' version 2.33 or lowerCheck Version:
wp plugin get wp-multi-step-checkout --field=versionVerify Fix Applied:
Verify plugin version is 2.34 or higher in WordPress admin plugins page📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript payloads in request logs
- Suspicious parameters in checkout-related URLs
- Multiple failed XSS attempts
Network Indicators:
- Requests with script tags in checkout parameters
- Unusual redirects from checkout pages
SIEM Query:
source="*access.log*" AND ("wp-multi-step-checkout" OR "checkout") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")