Falhas do tipo CWE-434

3.086 resultados

Upload irrestrito de arquivo com tipo perigoso

A aplicação aceita upload de arquivos sem validar adequadamente o tipo ou extensão, permitindo que um atacante envie executáveis, scripts ou outros arquivos maliciosos que serão armazenados ou executados no servidor. O risco aumenta se o arquivo for salvo em diretório acessível pela web ou em local onde será processado automaticamente.

Exemplo

Um sistema de upload de 'fotos de perfil' verifica apenas o tamanho do arquivo, mas não valida a extensão. Um atacante envia um arquivo .php disfarçado de imagem; se salvo em /uploads/ acessível via web, ele consegue executar código PHP no servidor ao acessar a URL direta.

Como mitigar

Valide extensões contra uma lista branca (whitelist) de tipos permitidos, verifique a assinatura do arquivo (magic bytes) e não confie apenas no Content-Type do cliente. Armazene uploads fora do diretório web ou configure o servidor para não executar scripts no diretório de uploads.

CVE-2024-1036HIGHopenBI Icon Screen.php uploadIcon unrestricted uploadEPSS 0.9%CVE-2024-3436MEDIUMSourceCodester Prison Management System Avatar edit-photo.php unrestricted uploadEPSS 0.9%CVE-2026-3459HIGHDrag and Drop Multiple File Upload for Contact Form 7 <= 1.3.9.5 - Unauthenticated Arbitrary File UploadEPSS 0.9%CVE-2023-53892HIGHBlackcat CMS 1.4 Remote Code Execution via Jquery Plugin ManagerEPSS 0.9%CVE-2023-1559MEDIUMSourceCodester Storage Unit Rental Management System unrestricted uploadEPSS 0.9%CVE-2026-6257CRITICALVvveb CMS < v1.0.8.2 Remote Code Execution via Media ManagementEPSS 0.9%CVE-2026-29186HIGH@backstage/plugin-techdocs-node: TechDocs Mkdocs Configuration Key Enables Arbitrary Code ExecutionEPSS 0.9%CVE-2022-0930HIGHFile upload filter bypass leading to stored XSS in microweber/microweberEPSS 0.9%CVE-2023-3623MEDIUMSuncreate Mountain Flood Disaster Prevention Monitoring and Early Warning System Duty Module UploadHandler.ashx unrestricted uploadEPSS 0.9%CVE-2025-34506HIGHWBCE CMS 1.6.3 Authenticated Remote Code Execution via Module UploadEPSS 0.9%CVE-2024-10960CRITICALBrizy – Page Builder <= 2.6.4 - Authenticated (Contributor+) Arbitrary File Upload via storeUploadsEPSS 0.9%CVE-2024-2849MEDIUMSourceCodester Simple File Manager unrestricted uploadEPSS 0.9%CVE-2025-25790CRITICALAn arbitrary file upload vulnerability in the component \controller\LocalTemplate.php of FoxCMS v1.2.5 allows attackers to execute arbitraryEPSS 0.9%CVE-2023-6887MEDIUMsaysky ForestBlog Image Upload img unrestricted uploadEPSS 0.9%CVE-2024-6311HIGHFunnelforms Free <= 3.7.3.2 - Authenticated (Administrator+) Arbitrary File UploadEPSS 0.9%CVE-2023-34007CRITICALWordPress Download Monitor Plugin <= 4.8.3 is vulnerable to Arbitrary File UploadEPSS 0.9%CVE-2024-6314CRITICALIQ Testimonials <= 2.2.7 - Unauthenticated Arbitrary File UploadEPSS 0.9%CVE-2024-4560CRITICALKognetiks Chatbot for WordPress <= 1.9.9 - Unauthenticated Arbitrary File Upload via chatbot_chatgpt_upload_file_to_assistant FunctionEPSS 0.9%CVE-2024-13981CRITICALLiveBos UploadFile.do Arbitrary File UploadEPSS 0.9%CVE-2026-81891HIGHelFinder: ZIP extraction bypasses uploadDeny MIME filter allowing PHP file upload (RCE)EPSS 0.9%