CVE-2025-52761
📋 TL;DR
CVE-2025-52761 is a PHP object injection vulnerability in the WP Funnel Manager WordPress plugin that allows attackers to execute arbitrary code by deserializing untrusted data. This affects all WordPress sites running WP Funnel Manager version 1.4.0 or earlier. Successful exploitation could lead to complete site compromise.
💻 Affected Systems
- WP Funnel Manager 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 full server compromise, data theft, malware installation, and complete site takeover.
Likely Case
Unauthenticated attackers gain administrative access to WordPress, install backdoors, deface websites, or steal sensitive data.
If Mitigated
Attackers can still exploit the vulnerability but impact is limited by proper network segmentation, file permissions, and monitoring.
🎯 Exploit Status
Deserialization vulnerabilities are commonly weaponized quickly. The CVSS 9.8 score indicates trivial exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Funnel Manager and click 'Update Now'. 4. Verify version is 1.4.1 or higher.
🔧 Temporary Workarounds
Disable WP Funnel Manager Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate wp-funnel-manager
Remove Plugin Files
linuxCompletely remove the plugin files if not needed.
rm -rf /path/to/wp-content/plugins/wp-funnel-manager/
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block deserialization attacks
- Restrict access to affected WordPress sites using IP whitelisting
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > WP Funnel Manager version. If version is 1.4.0 or earlier, you are vulnerable.Check Version:
wp plugin get wp-funnel-manager --field=versionVerify Fix Applied:
Verify WP Funnel Manager version is 1.4.1 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress endpoints
- Unexpected PHP object deserialization in logs
- New admin user creation
- Plugin file modifications
Network Indicators:
- HTTP requests with serialized PHP objects in parameters
- Traffic to known exploit patterns for CVE-2025-52761
SIEM Query:
source="wordpress.log" AND ("wp-funnel-manager" OR "CVE-2025-52761") AND ("deserialization" OR "object injection")