CVE-2024-32523
📋 TL;DR
CVE-2024-32523 is an unauthenticated path traversal vulnerability in the WordPress Mailster plugin that allows attackers to include arbitrary local PHP files. This can lead to remote code execution on affected WordPress sites. All WordPress installations using Mailster versions up to 4.0.6 are vulnerable.
💻 Affected Systems
- WordPress Mailster 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 compromise via remote code execution, allowing attackers to install backdoors, steal data, or pivot to other systems.
Likely Case
Remote code execution leading to website defacement, data theft, or malware installation.
If Mitigated
Limited impact if web server runs with minimal privileges and file system access is restricted.
🎯 Exploit Status
Exploit details are publicly available and require minimal technical skill to execute.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.7 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/mailster/wordpress-mailster-plugin-4-0-6-unauthenticated-local-file-inclusion-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Mailster and update to version 4.0.7 or later. 4. Verify update completed successfully.
🔧 Temporary Workarounds
Disable Mailster plugin
allTemporarily disable the vulnerable plugin until patching is possible
wp plugin deactivate mailster
Web Application Firewall rule
allBlock path traversal attempts targeting Mailster endpoints
Add WAF rule to block requests containing '../' or similar path traversal patterns to Mailster URLs
🧯 If You Can't Patch
- Implement strict file system permissions to limit web server user access
- Deploy web application firewall with path traversal detection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for Mailster versionCheck Version:
wp plugin list --name=mailster --field=versionVerify Fix Applied:
Verify Mailster version is 4.0.7 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- HTTP requests to Mailster endpoints with '../' sequences
- Unusual file inclusion attempts in web server logs
- Multiple 404 errors followed by successful requests to unusual paths
Network Indicators:
- HTTP requests containing path traversal patterns to /wp-content/plugins/mailster/ endpoints
SIEM Query:
web.url:*mailster* AND (web.url:*../* OR web.url:*..%2f* OR web.url:*..%5c*)