CVE-2025-26967
📋 TL;DR
This vulnerability allows attackers to inject malicious objects through deserialization of untrusted data in the Events Calendar for GeoDirectory WordPress plugin. Successful exploitation could lead to remote code execution or data manipulation. All WordPress sites using affected plugin versions are vulnerable.
💻 Affected Systems
- Events Calendar for GeoDirectory WordPress Plugin
📦 What is this software?
Events Calendar* by Wpgeodirectory
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Unauthorized data access, privilege escalation, or website defacement.
If Mitigated
Limited impact with proper input validation and security controls in place.
🎯 Exploit Status
Deserialization vulnerabilities are commonly exploited and weaponization is likely given the high CVSS score.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.15 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find 'Events Calendar for GeoDirectory'. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.3.15+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate events-for-geodirectory
Web Application Firewall Rule
allBlock deserialization attempts at WAF level.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Deploy web application firewall with deserialization attack detection
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Events Calendar for GeoDirectory version number.Check Version:
wp plugin get events-for-geodirectory --field=versionVerify Fix Applied:
Confirm plugin version is 2.3.15 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- PHP object injection patterns in logs
- Unexpected file writes or process execution
Network Indicators:
- HTTP requests with serialized objects in parameters
- Traffic to known exploit paths
SIEM Query:
source="web_logs" AND (uri="*geodirectory*" OR uri="*events*" OR uri="*calendar*") AND (method="POST" OR method="PUT") AND (param="*serialize*" OR param="*unserialize*" OR data="*O:*" OR data="*C:*")