CVE-2026-4300

{"id": "CVE-2026-4300", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-4300", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-08T14:17:41.302256Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "robosoft", "product": "Robo Gallery \u2013 Photo & Image Slider", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "5.1.3"}], "defaultStatus": "unaffected"}]}], "published": "2026-04-08T10:16:01.953", "references": [{"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/frontend/modules/base-grid/grid/grid.v1.php#L89", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/frontend/modules/base-grid/layout.v1.php#L101", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/frontend/modules/base-grid/layout.v1.php#L52", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/frontend/modules/class/jsoptions.php#L87", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/frontend/modules/class/jsoptions.php#L97", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/tags/5.1.3/includes/options/rbs_gallery_options_loading.php#L95", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/frontend/modules/base-grid/grid/grid.v1.php#L89", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/frontend/modules/base-grid/layout.v1.php#L101", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/frontend/modules/base-grid/layout.v1.php#L52", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/frontend/modules/class/jsoptions.php#L87", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/frontend/modules/class/jsoptions.php#L97", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/robo-gallery/trunk/includes/options/rbs_gallery_options_loading.php#L95", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3488182%40robo-gallery&new=3488182%40robo-gallery&sfp_email=&sfph_mail=", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d8693b7d-693f-450a-89ef-e936a8813ca9?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The Robo Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'Loading Label' setting in all versions up to, and including, 5.1.3. The plugin uses a custom `|***...***|` marker pattern in its `fixJsFunction()` method to embed raw JavaScript function references within JSON-encoded configuration objects. When a gallery's options are rendered on the frontend, `json_encode()` wraps all string values in double quotes. The `fixJsFunction()` method then strips the `\"|***` and `***|\"` sequences, effectively converting a JSON string value into raw JavaScript code. The Loading Label field (stored as `rbs_gallery_LoadingWord` post_meta) is an `rbstext` type field that is sanitized with `sanitize_text_field()` on save. While this strips HTML tags, it does not strip the `|***...***|` markers since they contain no HTML. When a user inputs `|***alert(document.domain)***|`, the value passes through sanitization intact, is stored in post_meta, and is later retrieved and output within an inline `<script>` tag via `renderMainBlock()` with the quote markers stripped \u2014 resulting in arbitrary JavaScript execution. The gallery post type uses `capability_type => 'post'`, allowing Author-level users to create galleries. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page containing the gallery shortcode."}, {"lang": "es", "value": "El plugin Robo Gallery para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de la configuraci\u00f3n Loading Label en todas las versiones hasta, e incluyendo, la 5.1.3. El plugin utiliza un patr\u00f3n de marcador personalizado '| ... |' en su m\u00e9todo 'fixJsFunction()' para incrustar referencias de funciones JavaScript en bruto dentro de objetos de configuraci\u00f3n codificados en JSON. Cuando las opciones de una galer\u00eda se renderizan en el frontend, 'json_encode()' envuelve todos los valores de cadena entre comillas dobles. El m\u00e9todo 'fixJsFunction()' luego elimina las secuencias \"| y |\" , convirtiendo efectivamente un valor de cadena JSON en c\u00f3digo JavaScript en bruto. El campo Loading Label (almacenado como 'rbs_gallery_LoadingWord' post_meta) es un campo de tipo 'rbstext' que se sanitiza con 'sanitize_text_field()' al guardar. Si bien esto elimina las etiquetas HTML, no elimina los marcadores '| ... |' ya que no contienen HTML. Cuando un usuario introduce '| alert(document.domain) |', el valor pasa por la sanitizaci\u00f3n intacto, se almacena en post_meta, y luego se recupera y se muestra dentro de una etiqueta ' script ' en l\u00ednea a trav\u00e9s de 'renderMainBlock()' con los marcadores de comillas eliminados - lo que resulta en la ejecuci\u00f3n arbitraria de JavaScript. El tipo de publicaci\u00f3n de galer\u00eda utiliza 'capability_type = post ', permitiendo a los usuarios con nivel de Autor crear galer\u00edas. Esto hace posible que atacantes autenticados, con acceso de nivel de Autor y superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina que contenga el shortcode de la galer\u00eda."}], "lastModified": "2026-07-24T20:10:00.147", "sourceIdentifier": "security@wordfence.com"}