Rankcheckerio Integration, Cross-Site Request Forgery (CSRF) with Stored XSS, CVE-2025-28857 (Critical)

How the CVE Works:

CVE-2025-28857 is a critical vulnerability in the Rankchecker.io Integration plugin, affecting versions up to 1.0.9. The flaw combines Cross-Site Request Forgery (CSRF) with Stored Cross-Site Scripting (XSS). Attackers can exploit this by tricking authenticated users into executing malicious actions without their knowledge. For example, a crafted request could inject malicious scripts into the application, which are then stored and executed when other users access the affected page. This allows attackers to steal sensitive data, hijack sessions, or perform unauthorized actions on behalf of the user.
The vulnerability arises due to insufficient validation of user-supplied input and lack of anti-CSRF tokens. When a user interacts with the Rankchecker.io Integration plugin, the application fails to verify the origin of the request, enabling attackers to forge requests. Additionally, the stored XSS component allows the injected scripts to persist, amplifying the impact of the attack.

DailyCVE Form:

Platform: Rankchecker.io Integration
Version: 1.0.9 and earlier
Vulnerability: CSRF with Stored XSS
Severity: Critical
Date: 03/11/2025

What Undercode Say:

Exploitation:

1. Crafting Malicious Payloads: Attackers create malicious scripts embedded in forged requests.

   <script>alert('XSS');</script>
   

2. CSRF Exploit: Use a forged request to inject the payload.

   </li>
   </ol>
   
   <form action="http://target.com/rankchecker-action" method="POST">
   <input type="hidden" name="payload" value="<script>malicious_code</script>">
   </form>
   
   <script>document.forms[bash].submit();</script>
   

   3. Stored XSS Execution: The payload is stored and executed when other users access the page.

   Protection:

   1. Implement Anti-CSRF Tokens: Ensure all requests include a unique token.

      session_start();
      $csrf_token = bin2hex(random_bytes(32));
      $_SESSION[bash] = $csrf_token;
      echo '<input type="hidden" name="csrf_token" value="' . $csrf_token . '">';
      

   2. Input Validation and Sanitization: Validate and sanitize all user inputs.

      $clean_input = htmlspecialchars($_POST[bash], ENT_QUOTES, 'UTF-8');
      

   3. Content Security Policy (CSP): Restrict script execution to trusted sources.

      Content-Security-Policy: default-src 'self'; script-src 'self' https://trusted.cdn.com;
      

   4. Regular Updates: Update the plugin to the latest version.

      wp plugin update rankchecker-integration
      

   Analytics:

   • Attack Vector: Remote
   • Exploitability: High
   • Impact: Data theft, session hijacking, unauthorized actions
   • Mitigation Complexity: Low

   Commands:

   • Check Plugin Version:

     wp plugin get rankchecker-integration --field=version
     

   • Remove Vulnerable Plugin:

     wp plugin delete rankchecker-integration
     

   • Scan for Vulnerabilities:

     wp vulnerability scan
     

     By following these steps, users can mitigate the risks associated with CVE-2025-28857 and secure their systems against similar vulnerabilities.

   References:

   Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-28857
   Extra Source Hub:
   Undercode

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