CVE-2024-11840
📋 TL;DR
The RapidLoad WordPress plugin has missing capability checks on multiple AJAX functions, allowing authenticated users with Subscriber-level access or higher to modify plugin settings or conduct SQL injection attacks. This affects all WordPress sites using RapidLoad plugin versions up to 2.4.2.
💻 Affected Systems
- RapidLoad – Optimize Web Vitals Automatically 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
Attackers could execute arbitrary SQL queries, potentially leading to complete database compromise, privilege escalation, or site takeover.
Likely Case
Unauthorized modification of plugin settings, disruption of site optimization features, or limited data exposure through SQL injection.
If Mitigated
With proper access controls and input validation, impact would be limited to authorized administrative actions only.
🎯 Exploit Status
Exploitation requires authenticated access but only at Subscriber level, which is the lowest WordPress user role.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.4.3 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3202982/unusedcss
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find RapidLoad plugin and click 'Update Now'. 4. Verify version is 2.4.3 or higher.
🔧 Temporary Workarounds
Disable RapidLoad Plugin
allTemporarily deactivate the vulnerable plugin until patched
wp plugin deactivate rapidload
Restrict User Registration
allDisable new user registration to limit potential attackers
wp option update users_can_register 0
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious AJAX requests to RapidLoad endpoints
- Review and audit all WordPress user accounts, especially those with Subscriber role
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → RapidLoad → Version number. If version is 2.4.2 or lower, system is vulnerable.Check Version:
wp plugin get rapidload --field=versionVerify Fix Applied:
After updating, verify RapidLoad plugin version shows 2.4.3 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with action parameters like uucss_data, update_rapidload_settings, etc.
- SQL error messages in WordPress debug logs
Network Indicators:
- HTTP POST requests to admin-ajax.php with RapidLoad-specific action parameters from non-admin users
SIEM Query:
source="wordpress.log" AND "admin-ajax.php" AND ("uucss_data" OR "update_rapidload_settings" OR "wp_ajax_update_htaccess_file" OR "uucss_update_rule" OR "upload_rules" OR "get_all_rules" OR "update_titan_settings" OR "preload_page" OR "activate_module")