CVE-2025-47581
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code on WordPress sites by exploiting insecure deserialization in the Events Calendar Registration & Tickets plugin. Attackers can inject malicious objects that lead to remote code execution. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Events Calendar Registration & Tickets
⚠️ 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 leading to data theft, malware installation, and use as attack platform
Likely Case
Website defacement, data exfiltration, and backdoor installation
If Mitigated
Limited impact with proper WAF rules and security monitoring
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited with public tools
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.6.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Go to Plugins → Installed Plugins
3. Find 'WordPress Events Calendar Registration & Tickets'
4. Click 'Update Now' if available
5. If no update available, deactivate and remove plugin
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate wpeventplus
WAF Rule for Deserialization
allAdd web application firewall rule to block deserialization attempts
🧯 If You Can't Patch
- Deactivate and remove the plugin completely
- Implement strict input validation and sanitization at application layer
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'WordPress Events Calendar Registration & Tickets' version 2.6.0 or earlierCheck Version:
wp plugin get wpeventplus --field=versionVerify Fix Applied:
Verify plugin version is 2.6.1 or later in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- PHP serialized data in request logs
- Unexpected file creation in wp-content
Network Indicators:
- HTTP requests containing serialized PHP objects
- Traffic to known exploit patterns
SIEM Query:
source="web_logs" AND (uri="*wpeventplus*" OR uri="*wp-content/plugins/wpeventplus*") AND (request_body="*O:*" OR request_body="*s:*")