CVE-2024-9890
📋 TL;DR
The User Toolkit WordPress plugin up to version 1.2.3 contains an authentication bypass vulnerability that allows authenticated attackers with subscriber-level permissions or higher to log in as any existing user, including administrators. This occurs due to improper capability checking in the 'switchUser' function. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- User Toolkit 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 gain administrative access, leading to complete site compromise, data theft, malware injection, or site defacement.
Likely Case
Attackers escalate privileges to administrator level, modify content, install malicious plugins, or steal sensitive data.
If Mitigated
Attackers can only access accounts with equal or lower privileges than their own.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once authenticated. The vulnerability is well-documented in public references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.4 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3175190/user-toolkit#file5
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'User Toolkit' and update to version 1.2.4 or later. 4. Alternatively, deactivate and delete the plugin if not needed.
🔧 Temporary Workarounds
Disable User Toolkit plugin
allTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate user-toolkit
Restrict user registration
allLimit new user registrations to prevent attackers from obtaining subscriber accounts.
Set 'Anyone can register' to false in WordPress Settings → General
🧯 If You Can't Patch
- Implement strict access controls and monitor user activity logs for suspicious privilege escalation attempts.
- Use web application firewall (WAF) rules to block requests to the vulnerable 'switchUser' function endpoint.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for User Toolkit version 1.2.3 or earlier.Check Version:
wp plugin get user-toolkit --field=versionVerify Fix Applied:
Confirm User Toolkit plugin is updated to version 1.2.4 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual user privilege changes in WordPress logs
- Multiple login events from same IP for different users
- Admin actions from previously non-admin accounts
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with action 'switchUser'
- Rapid succession of authentication requests
SIEM Query:
source="wordpress" AND (event="user_switched" OR event="privilege_escalation")