CVE-2025-39557
📋 TL;DR
This vulnerability allows unauthenticated attackers to upload arbitrary files, including web shells, to WordPress servers running the Kadence WooCommerce Email Designer plugin. Attackers can achieve remote code execution and full server compromise. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Kadence WooCommerce Email Designer WordPress Plugin
⚠️ 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
Complete server takeover with web shell installation, data exfiltration, lateral movement to other systems, and ransomware deployment.
Likely Case
Web shell upload leading to website defacement, data theft, cryptocurrency mining, or use as part of a botnet.
If Mitigated
File upload attempts blocked at WAF level, with alerts generated for investigation.
🎯 Exploit Status
Exploit requires no authentication and uses simple HTTP POST requests with file uploads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.15 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Kadence WooCommerce Email Designer'. 4. Click 'Update Now' if available. 5. Alternatively, download version 1.5.15+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate kadence-woocommerce-email-designer
WAF File Upload Blocking
allConfigure WAF to block file uploads to vulnerable endpoints
🧯 If You Can't Patch
- Implement strict file upload validation at application level
- Deploy network segmentation to isolate WordPress servers
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Kadence WooCommerce Email Designer versionCheck Version:
wp plugin get kadence-woocommerce-email-designer --field=versionVerify Fix Applied:
Confirm plugin version is 1.5.15 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-content/plugins/kadence-woocommerce-email-designer/ with file uploads
- Unexpected .php files in upload directories
- Web server executing files from unusual locations
Network Indicators:
- HTTP POST requests with file uploads to plugin endpoints
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_logs" AND (uri="/wp-content/plugins/kadence-woocommerce-email-designer/*" AND method="POST" AND file_upload="true")