CVE-2024-54367
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code through PHP object injection by exploiting unsafe deserialization in ForumWP WordPress plugin. All WordPress sites running ForumWP versions up to 2.1.0 are affected. Attackers can gain full control of vulnerable websites.
💻 Affected Systems
- ForumWP WordPress Plugin
📦 What is this software?
Forumwp by Ultimatemember
Forumwp by Ultimatemember
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data theft, malware deployment, credential harvesting, and website defacement.
Likely Case
Remote code execution allowing attackers to create admin users, install backdoors, or exfiltrate sensitive data.
If Mitigated
Limited impact if proper input validation and output encoding are implemented, though deserialization vulnerabilities remain dangerous.
🎯 Exploit Status
CVSS 9.8 indicates critical severity with low attack complexity. Public exploit details available on security research sites.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.1 or later
Vendor Advisory: https://patchstack.com/database/wordpress/plugin/forumwp/vulnerability/wordpress-forumwp-plugin-2-1-0-php-object-injection-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find ForumWP and click 'Update Now'. 4. Verify version is 2.1.1 or higher.
🔧 Temporary Workarounds
Disable ForumWP Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate forumwp
Restrict Plugin Access
allUse web application firewall to block requests to ForumWP endpoints
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Deploy web application firewall with deserialization attack detection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → ForumWP version. If version is 2.1.0 or lower, you are vulnerable.Check Version:
wp plugin get forumwp --field=versionVerify Fix Applied:
After update, confirm ForumWP version shows 2.1.1 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to ForumWP endpoints
- PHP error logs containing unserialize() warnings
- Unexpected file creation in wp-content/uploads
Network Indicators:
- HTTP requests with serialized PHP objects in parameters
- Traffic to known malicious IPs from WordPress server
SIEM Query:
source="apache_access" OR source="nginx_access" AND (uri="*forumwp*" AND (method="POST" OR method="PUT")) AND size>1000