CVE-2025-28939
📋 TL;DR
This SQL injection vulnerability in the WP Google Calendar Manager WordPress plugin allows attackers to execute arbitrary SQL commands on the database. It affects all versions up to 2.1, potentially compromising websites using this plugin. Attackers could extract sensitive data, modify database contents, or gain unauthorized access.
💻 Affected Systems
- WP Google Calendar 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
Complete database compromise leading to data theft, privilege escalation, website defacement, or full system takeover if database user has elevated privileges.
Likely Case
Data exfiltration of user information, plugin settings, or WordPress metadata through blind SQL injection techniques.
If Mitigated
Limited impact with proper database user permissions, input validation, and web application firewalls in place.
🎯 Exploit Status
Blind SQL injection requires specialized techniques but is well-documented. No public exploit code identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 2.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Google Calendar Manager. 4. Click 'Update Now' if update available. 5. If no update, deactivate and delete plugin, then install fresh version 2.2+ from WordPress repository.
🔧 Temporary Workarounds
Web Application Firewall
allDeploy a WAF with SQL injection protection rules to block exploitation attempts.
Plugin Deactivation
WordPressTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate wp-gcalendar
🧯 If You Can't Patch
- Implement strict input validation and parameterized queries in custom code
- Restrict database user permissions to minimum required privileges
🔍 How to Verify
Check if Vulnerable:
Check plugin version in WordPress admin under Plugins > Installed Plugins. If version is 2.1 or earlier, you are vulnerable.Check Version:
wp plugin get wp-gcalendar --field=versionVerify Fix Applied:
Confirm plugin version is 2.2 or higher after update. Test calendar functionality works properly.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed parameter manipulation attempts
- Suspicious database queries from web application
Network Indicators:
- HTTP requests with SQL syntax in parameters
- Repeated requests to calendar endpoints with varying parameters
SIEM Query:
source="web_logs" AND ("sql" OR "union" OR "select" OR "sleep(") AND uri="*wp-gcalendar*"