CVE-2024-9893
📋 TL;DR
The Nextend Social Login Pro WordPress plugin has an authentication bypass vulnerability that allows unauthenticated attackers to log in as any existing user, including administrators, if they know the user's email address and the user doesn't have an existing account with the social service. This affects all versions up to 3.1.14. WordPress sites using this plugin are vulnerable.
💻 Affected Systems
- Nextend Social Login Pro for WordPress
⚠️ 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 to WordPress sites, enabling complete site takeover, data theft, malware injection, and defacement.
Likely Case
Attackers compromise user accounts to steal sensitive data, post malicious content, or escalate privileges to administrative access.
If Mitigated
With proper monitoring and access controls, impact is limited to unauthorized access detection and account lockout.
🎯 Exploit Status
Exploitation requires knowledge of target user email addresses and that those users don't have existing social service accounts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.1.15
Vendor Advisory: https://nextendweb.com/social-login/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Nextend Social Login Pro. 4. Click 'Update Now' if available, or download version 3.1.15+ from vendor. 5. Activate updated plugin.
🔧 Temporary Workarounds
Disable Social Login Plugin
allTemporarily disable the vulnerable plugin until patched.
wp plugin deactivate nextend-social-login-pro
Restrict User Registration
allDisable new user registration in WordPress settings.
🧯 If You Can't Patch
- Disable the Nextend Social Login Pro plugin immediately.
- Implement web application firewall rules to block suspicious authentication attempts.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Nextend Social Login Pro version 3.1.14 or lower.Check Version:
wp plugin get nextend-social-login-pro --field=versionVerify Fix Applied:
Verify plugin version is 3.1.15 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication attempts via social login endpoints
- Multiple failed login attempts followed by successful login from new IP
- User account logins from unexpected locations
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with social login parameters
- Unusual traffic to social login callback URLs
SIEM Query:
source="wordpress.log" AND ("nextend" OR "social-login") AND ("authentication" OR "login")