CVE-2025-11007
📋 TL;DR
The CE21 Suite WordPress plugin versions 2.2.1 to 2.3.1 contain an authentication bypass vulnerability that allows unauthenticated attackers to modify plugin settings, including authentication secrets. This enables attackers to create new administrator accounts and take full control of affected WordPress sites. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- CE21 Suite 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 site takeover with attacker creating admin accounts, installing backdoors, defacing content, stealing data, and using the site for further attacks.
Likely Case
Site compromise leading to malware injection, SEO spam, credential theft, and unauthorized content modification.
If Mitigated
Limited impact if plugin is disabled or removed, but other vulnerabilities may still exist if the site was already compromised.
🎯 Exploit Status
The vulnerability is simple to exploit via crafted AJAX requests without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.2 or later
Vendor Advisory: https://wordpress.org/plugins/ce21-suite/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find CE21 Suite plugin. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 2.3.2+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable CE21 Suite Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate ce21-suite
Block Vulnerable AJAX Endpoint
linuxBlock access to the vulnerable AJAX action via web server or WAF.
# Apache: RewriteRule ^wp-admin/admin-ajax\.php.*ce21_single_sign_on_save_api_settings - [F]
# Nginx: location ~* ce21_single_sign_on_save_api_settings { deny all; }
🧯 If You Can't Patch
- Immediately disable or remove the CE21 Suite plugin from all WordPress installations.
- Implement web application firewall rules to block requests containing 'ce21_single_sign_on_save_api_settings' in AJAX endpoints.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for CE21 Suite version. If version is between 2.2.1 and 2.3.1 inclusive, the site is vulnerable.Check Version:
wp plugin list --name=ce21-suite --field=versionVerify Fix Applied:
Verify CE21 Suite plugin version is 2.3.2 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-admin/admin-ajax.php with action=ce21_single_sign_on_save_api_settings from unauthenticated IPs
- Unusual admin user creation events in WordPress logs
- Plugin setting modifications in CE21 Suite logs
Network Indicators:
- HTTP POST requests containing 'ce21_single_sign_on_save_api_settings' parameter
- Unusual spikes in requests to WordPress AJAX endpoints
SIEM Query:
source="wordpress.log" AND (action="ce21_single_sign_on_save_api_settings" OR "admin user created" OR "plugin settings updated")