CVE-2026-44176

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The access permission has the same effect but also disables direct access to the affected models. This vulnerability affects the path resolver for the main CMS router. The resolver takes an input path from the requested URL and determines which model (page or file) should be rendered. When a path is requested that points to a page draft, the resolver checks that the request either contains a valid preview token or is authenticated by a valid user. In affected releases, Kirby allowed page drafts to be rendered if any valid user was authenticated, even if that user did not have access to the specific page model. Authenticated attackers with knowledge of the full path to an existing page draft could then access the rendered frontend page. This could lead to the disclosure of sensitive information, e.g. ahead of the launch of a new product or post. This issue has been fixed in versions 4.9.1 and 5.4.1."}, {"lang": "es", "value": "Kirby es un sistema de gesti\u00f3n de contenido de c\u00f3digo abierto. Las versiones anteriores a 4.9.1 y 5.4.1 no verifican el permiso \u2019pages.access\u2019 durante la renderizaci\u00f3n de borradores de p\u00e1gina. Los permisos se definen para cada rol de usuario en el \u2019blueprint\u2019 de usuario (site/blueprints/users/...). Tambi\u00e9n es posible personalizar los permisos para cada modelo de destino en los \u2019blueprints\u2019 de modelo (como en site/blueprints/pages/...) utilizando la funci\u00f3n de opciones. Los permisos y las opciones juntos controlan la autorizaci\u00f3n de las acciones del usuario. Kirby proporciona los permisos \u2019pages.access\u2019 y \u2019pages.list\u2019 (entre otros). El permiso \u2019list\u2019 controla si los modelos afectados aparecen en listas en todo el Panel y la API REST. El permiso \u2019access\u2019 tiene el mismo efecto pero tambi\u00e9n deshabilita el acceso directo a los modelos afectados. Esta vulnerabilidad afecta al resolvedor de rutas para el router principal del CMS. El resolvedor toma una ruta de entrada de la URL solicitada y determina qu\u00e9 modelo (p\u00e1gina o archivo) debe ser renderizado. Cuando se solicita una ruta que apunta a un borrador de p\u00e1gina, el resolvedor verifica que la solicitud contenga un token de vista previa v\u00e1lido o est\u00e9 autenticada por un usuario v\u00e1lido. En las versiones afectadas, Kirby permit\u00eda que los borradores de p\u00e1gina se renderizaran si cualquier usuario v\u00e1lido estaba autenticado, incluso si ese usuario no ten\u00eda acceso al modelo de p\u00e1gina espec\u00edfico. Atacantes autenticados con conocimiento de la ruta completa a un borrador de p\u00e1gina existente podr\u00edan entonces acceder a la p\u00e1gina de frontend renderizada. Esto podr\u00eda llevar a la divulgaci\u00f3n de informaci\u00f3n sensible, por ejemplo, antes del lanzamiento de un nuevo producto o publicaci\u00f3n. Este problema ha sido solucionado en las versiones 4.9.1 y 5.4.1."}], "id": "CVE-2026-44176", "lastModified": "2026-10-24T20:10:00.137", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.0, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44176", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-07-17T11:10:56.143346Z", "version": "2.0.3"}}]}, "published": "2026-07-16T22:17:01.967", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/getkirby/kirby/releases/tag/5.4.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/getkirby/kirby/security/advisories/GHSA-2xw4-v2wx-hqq9"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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