Falhas do tipo CWE-434

3.246 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-2022-2678MEDIUMSourceCodester Alphaware Simple E-Commerce System Background Management Page admin_feature.php unrestricted uploadEPSS 0.9%CVE-2022-2909MEDIUMSourceCodester Simple and Nice Shopping Cart Script profile.php unrestricted uploadEPSS 0.9%CVE-2025-26350MEDIUMA CWE-434 "Unrestricted Upload of File with Dangerous Type" in the template file uploads in Q-Free MaxTime less than or equal to version 2.1EPSS 0.9%CVE-2022-2694MEDIUMSourceCodester Company Website CMS unrestricted uploadEPSS 0.9%CVE-2023-3797MEDIUMGen Technology Four Mountain Torrent Disaster Prevention and Control of Monitoring and Early Warning System UploadFloodPlanFileUpdate.ashx unrestricted uploadEPSS 0.9%CVE-2025-6679CRITICALContact Form by Bit Form - Bit Form <= 2.20.3 - Unauthenticated Arbitrary File UploadEPSS 0.9%CVE-2024-4966MEDIUMSourceCodester SchoolWebTech home.php unrestricted uploadEPSS 0.9%CVE-2023-0783MEDIUMEcShop PHP File template.php unrestricted uploadEPSS 0.9%CVE-2023-5796MEDIUMCodeAstro POS System Logo setting unrestricted uploadEPSS 0.9%CVE-2023-3806MEDIUMSourceCodester House Rental and Property Listing System btn_functions.php unrestricted uploadEPSS 0.9%CVE-2023-1479MEDIUMSourceCodester Simple Music Player save_music.php unrestricted uploadEPSS 0.9%CVE-2023-1797MEDIUMOTCMS unrestricted uploadEPSS 0.9%CVE-2022-45527CRITICALFile upload vulnerability in Future-Depth Institutional Management Website (IMS) 1.0, allows unauthorized attackers to directly upload malicEPSS 0.9%CVE-2026-18983HIGHOne User Avatar | User Profile Picture <= 2.5.4 - Authenticated (Subscriber+) Stored Cross-Site Scripting via wpua-file ParameterEPSS 0.9%CVE-2026-93754CRITICALpayever – WooCommerce Gateway <= 4.8.0 - Unauthenticated Arbitrary File Upload Leading to Remote Code ExecutionEPSS 0.9%CVE-2022-2749MEDIUMSourceCodester Gym Management System unrestricted uploadEPSS 0.9%CVE-2026-29186HIGH@backstage/plugin-techdocs-node: TechDocs Mkdocs Configuration Key Enables Arbitrary Code ExecutionEPSS 0.9%CVE-2023-1433MEDIUMSourceCodester Gadget Works Online Ordering System Products unrestricted uploadEPSS 0.9%CVE-2026-18080CRITICALERP: Complete HR, Accounting & CRM Suite Built for WooCommerce <= 1.17.8 - Unauthenticated Arbitrary File Upload via CRM Email Connect IMAP AttachmentEPSS 0.9%CVE-2025-20354CRITICALCisco Unified Contact Center Express Remote Code Execution VulnerabilityEPSS 0.9%