CVE-2025-47683
📋 TL;DR
This vulnerability allows attackers to inject malicious PHP objects through deserialization of untrusted data in the WP Maintenance WordPress plugin. Successful exploitation could lead to remote code execution or other malicious activities. All WordPress sites running WP Maintenance version 6.1.9.7 or earlier are affected.
💻 Affected Systems
- WP Maintenance 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
Remote code execution leading to complete site compromise, data theft, malware installation, or site defacement.
Likely Case
Arbitrary file upload leading to backdoor installation, privilege escalation, or data manipulation.
If Mitigated
Limited impact if proper input validation and output encoding are implemented elsewhere in the application.
🎯 Exploit Status
Public exploit details are available on Patchstack and other security databases. The vulnerability requires no authentication and has low exploitation complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.1.9.8 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Maintenance and click 'Update Now'. 4. Verify the plugin version is 6.1.9.8 or higher.
🔧 Temporary Workarounds
Disable WP Maintenance Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate wp-maintenance
Restrict Plugin Access
allUse web application firewall to block requests to vulnerable plugin endpoints
🧯 If You Can't Patch
- Disable the WP Maintenance plugin immediately
- Implement strict WAF rules to block deserialization attempts and monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WP Maintenance versionCheck Version:
wp plugin list --name=wp-maintenance --field=versionVerify Fix Applied:
Verify WP Maintenance plugin version is 6.1.9.8 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WP Maintenance endpoints
- PHP deserialization errors in logs
- Unexpected file uploads or modifications
Network Indicators:
- HTTP requests containing serialized PHP objects
- Requests to wp-maintenance plugin endpoints with unusual parameters
SIEM Query:
source="web_logs" AND (uri="*wp-maintenance*" OR uri="*wp-content/plugins/wp-maintenance*") AND (method="POST" OR method="PUT")