CVE-2025-1061

9.8 CRITICAL

📋 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 have access to the target's email address. This affects all WordPress sites using the plugin version 3.1.16 or earlier. Attackers can gain full administrative access to vulnerable WordPress installations.

💻 Affected Systems

Products:
  • Nextend Social Login Pro for WordPress
Versions: Up to and including 3.1.16
Operating Systems: All
Default Config Vulnerable: ⚠️ Yes
Notes: Requires Apple OAuth provider configuration, but vulnerability exists in the authentication flow regardless of specific provider settings.

⚠️ 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.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete site takeover with administrative privileges, allowing data theft, defacement, malware injection, and backdoor installation.

🟠

Likely Case

Administrative account compromise leading to unauthorized content changes, plugin/theme installation, and user privilege escalation.

🟢

If Mitigated

Limited impact if strong network segmentation, web application firewalls, and monitoring are in place to detect unusual authentication patterns.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ⚠️ Yes
Complexity: LOW

Attack requires knowledge of target email addresses but no authentication or special privileges to execute.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 3.1.17 or later

Vendor Advisory: https://nextendweb.com/nextend-social-login-docs/pro-addon-changelog/

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
5. Alternatively, download version 3.1.17+ from vendor site and upload manually

🔧 Temporary Workarounds

Disable Apple OAuth Provider

all

Temporarily disable the Apple OAuth provider in plugin settings to prevent exploitation through this vector.

Disable Plugin

linux

Completely deactivate the Nextend Social Login Pro plugin until patched.

wp plugin deactivate nextend-facebook-connect-pro

🧯 If You Can't Patch

  • Immediately disable the Nextend Social Login Pro plugin entirely
  • Implement web application firewall rules to block suspicious authentication requests to /wp-admin/admin-ajax.php with Apple OAuth parameters

🔍 How to Verify

Check if Vulnerable:

Check plugin version in WordPress admin under Plugins > Installed Plugins. If version is 3.1.16 or lower, you are vulnerable.

Check Version:

wp plugin get nextend-facebook-connect-pro --field=version

Verify Fix Applied:

Verify plugin version is 3.1.17 or higher after update. Test Apple OAuth login functionality to ensure it works without allowing unauthorized access.

📡 Detection & Monitoring

Log Indicators:

  • Multiple failed login attempts followed by successful login via Apple OAuth
  • Unusual user agent strings during authentication
  • Administrative actions from previously inactive accounts

Network Indicators:

  • HTTP POST requests to /wp-admin/admin-ajax.php with 'action=nextend_social_login_authenticate' and Apple provider parameters
  • Unusual spikes in authentication traffic

SIEM Query:

source="wordpress.log" AND "nextend_social_login_authenticate" AND "provider=apple" | stats count by src_ip, user

🔗 References

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