Planet Studio, Cross-Site Request Forgery (CSRF), CVE-2025-28864 (Critical)

How the CVE Works:

CVE-2025-28864 is a critical Cross-Site Request Forgery (CSRF) vulnerability in the Planet Studio Builder for Contact Form 7 plugin by Webconstruct. This flaw allows attackers to trick authenticated users into executing unintended actions on the web application without their consent. The vulnerability exists in versions up to 1.2.2 of the plugin. When a logged-in administrator visits a maliciously crafted webpage, the attacker can forge requests to modify plugin settings, inject malicious scripts, or perform other unauthorized actions. The lack of proper CSRF tokens or validation mechanisms in the plugin’s forms enables this exploitation. The CVSS 4.0 score reflects its high severity due to the potential for widespread impact on websites using this plugin.

DailyCVE Form:

Platform: WordPress
Version: 1.2.2 and earlier
Vulnerability: CSRF
Severity: Critical
Date: 03/11/2025

What Undercode Say:

Exploitation:

1. Crafting Malicious Payloads: Attackers create malicious web pages containing forged requests targeting the plugin’s admin interface.

   </li>
   </ol>
   
   <form action="http://target-site/wp-admin/admin-ajax.php" method="POST">
   <input type="hidden" name="action" value="update_plugin_settings">
   <input type="hidden" name="settings" value="malicious_code">
   </form>
   
   <script>document.forms[bash].submit();</script>
   

   2. Social Engineering: Attackers lure administrators to visit the malicious page, triggering the CSRF attack.
   3. Impact: Successful exploitation can lead to unauthorized changes, data theft, or site compromise.

   Protection:

   1. Update Plugin: Ensure the plugin is updated to the latest version if a patch is released.
   2. Implement CSRF Tokens: Add CSRF tokens to all forms and validate them on the server side.

      // Generate CSRF token
      $csrf_token = bin2hex(random_bytes(32));
      $_SESSION[bash] = $csrf_token;
      // Validate CSRF token
      if ($_POST[bash] !== $_SESSION[bash]) {
      die("CSRF validation failed.");
      }
      

   3. Use Security Plugins: Install WordPress security plugins like Wordfence or iThemes Security to detect and block CSRF attempts.
   4. Restrict Admin Access: Limit access to the admin panel to trusted IP addresses.

      <Files admin-ajax.php>
      Order Deny,Allow
      Deny from all
      Allow from 192.168.1.1
      </Files>
      

   5. Educate Users: Train administrators to avoid clicking suspicious links or visiting untrusted sites while logged in.

   Analytics:

   • Attack Vector: Network-based exploitation via crafted HTTP requests.
   • Complexity: Low; requires minimal technical skill.
   • Privileges: Requires authenticated admin access.
   • User Interaction: High; relies on tricking users into visiting malicious pages.

   Commands:

   • Check Plugin Version:

     wp plugin get builder-for-contact-form-7 --field=version
     

   • Disable Plugin:

     wp plugin deactivate builder-for-contact-form-7
     

   References:

   • bash
   • bash

   References:

   Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-28864
   Extra Source Hub:
   Undercode

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