CVE-2026-22707

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The upload plugin's `enforceUploadSecurity` security check was invoked in the admin upload controller but was missing from the Content API controller. The Content API handlers `uploadFiles` and `replaceFile` (and the `upload` wrapper that dispatches to them) called the underlying upload service directly, bypassing both the magic-byte MIME detection and the configured allow/deny lists. An authenticated user with the Content API upload permission could therefore upload file types the administrator had explicitly disallowed, including HTML and SVG content. In deployments serving uploaded files from the same origin as the admin panel (default), an attacker could upload an HTML or SVG file that, when opened directly by an admin, executed JavaScript in the admin origin, enabling admin-session hijack and authenticated administrative actions against the admin API. The patch in version 5.33.3 introduces a shared `prepareUploadRequest` helper that wraps `enforceUploadSecurity` and is called from both the Content API and admin upload controllers, ensuring identical security policy enforcement on every upload entry point."}, {"lang": "es", "value": "Strapi es un sistema de gesti\u00f3n de contenido headless de c\u00f3digo abierto. En versiones de Strapi anteriores a la 5.33.3, los endpoints de la API de Contenido del plugin de Carga (Upload) no aplicaban las restricciones de tipo MIME configuradas por el administrador (\u2019plugin.upload.security.allowedTypes\u2019 y \u2019deniedTypes\u2019). Las mismas restricciones se aplicaban correctamente en la ruta de carga del Panel de Administraci\u00f3n. La verificaci\u00f3n de seguridad \u2019enforceUploadSecurity\u2019 del plugin de carga se invocaba en el controlador de carga de administraci\u00f3n, pero faltaba en el controlador de la API de Contenido. Los manejadores de la API de Contenido \u2019uploadFiles\u2019 y \u2019replaceFile\u2019 (y el wrapper \u2019upload\u2019 que los despacha) llamaban directamente al servicio de carga subyacente, omitiendo tanto la detecci\u00f3n de MIME por magic-byte como las listas de permitidos/denegados configuradas. Un usuario autenticado con permiso de carga de la API de Contenido pod\u00eda, por lo tanto, cargar tipos de archivo que el administrador hab\u00eda desautorizado expl\u00edcitamente, incluyendo contenido HTML y SVG. En despliegues que serv\u00edan archivos cargados desde el mismo origen que el panel de administraci\u00f3n (por defecto), un atacante pod\u00eda cargar un archivo HTML o SVG que, al ser abierto directamente por un administrador, ejecutaba JavaScript en el origen del administrador, permitiendo el secuestro de la sesi\u00f3n de administrador y acciones administrativas autenticadas contra la API de administraci\u00f3n. El parche en la versi\u00f3n 5.33.3 introduce un ayudante compartido \u2019prepareUploadRequest\u2019 que envuelve a \u2019enforceUploadSecurity\u2019 y es llamado tanto desde la API de Contenido como desde los controladores de carga de administraci\u00f3n, asegurando una aplicaci\u00f3n id\u00e9ntica de la pol\u00edtica de seguridad en cada punto de entrada de carga."}], "id": "CVE-2026-22707", "lastModified": "2026-10-26T14:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "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:N/PR:L/UI:N/VC:L/VI:L/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": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-22707", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-14T19:39:53.488227Z", "version": "2.0.3"}}]}, "published": "2026-05-14T19:16:30.837", "references": [{"source": "security-advisories@github.com", "tags": ["Vendor Advisory"], "url": "https://github.com/strapi/strapi/security/advisories/GHSA-pcw7-5633-82vv"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-434"}, {"lang": "en", "value": "CWE-693"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

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