Falhas do tipo CWE-434

3.099 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-2025-45855MEDIUMAn arbitrary file upload vulnerability in the component /upload/GoodsCategory/image of erupt v1.12.19 allows attackers to execute arbitrary EPSS 0.3%CVE-2024-40553MEDIUMTmall_demo v2024.07.03 was discovered to contain an arbitrary file upload via the component uploadUserHeadImage.EPSS 0.3%CVE-2026-28800MEDIUMNatro Macro: Malicious actions allowed through Discord RC Commands by any userEPSS 0.3%CVE-2025-2155HIGHArbitrary File Upload in EchoCCS's Specto CMEPSS 0.3%CVE-2025-3169LOWProjeqtor saveAttachment.php unrestricted uploadEPSS 0.3%CVE-2025-53251CRITICALWordPress Pin WP theme < 7.2 - Arbitrary File Upload VulnerabilityEPSS 0.3%CVE-2025-48396HIGHArbitrary code execution is possible due to improper validation of the file upload functionality in Eaton BLSS. This security issue has beenEPSS 0.3%CVE-2024-8918HIGHFile Manager Pro <= 8.3.9 - Unauthenticated Limited JavaScript File UploadEPSS 0.3%CVE-2025-53213CRITICALWordPress ReachShip WooCommerce Multi-Carrier & Conditional Shipping <= 4.3.1 - Arbitrary File Upload VulnerabilityEPSS 0.3%CVE-2026-9374MEDIUMyangzongzhuan RuoYi-Vue Common Upload Endpoint upload FileUploadUtils.upload unrestricted uploadEPSS 0.3%CVE-2025-27714MEDIUMINFINITT Healthcare INFINITT PACS Unrestricted Upload of File with Dangerous TypeEPSS 0.3%CVE-2025-15050MEDIUMcode-projects Student File Management System save_file.php unrestricted uploadEPSS 0.3%CVE-2025-55061HIGHPriority - CWE-434 Unrestricted Upload of File with Dangerous TypeEPSS 0.3%CVE-2019-25229HIGHKentico Xperience <= 12.0.29 MVC Forms Unrestricted File UploadEPSS 0.3%CVE-2026-11839CRITICALArbitrary File Upload in Basarsoft's RotabanEPSS 0.3%CVE-2025-61768MEDIUMKuno CMS Vulnerable to Server-Side Request Forgery (SSRF) via Unsafe SVG UploadEPSS 0.3%CVE-2025-53891MEDIUMTIME LINE has Improper File Validation in Upload SectionEPSS 0.3%CVE-2025-7100MEDIUMBoyunCMS Index.php unrestricted uploadEPSS 0.3%CVE-2025-9841MEDIUMcode-projects Mobile Shop Management System AddNewProduct.php unrestricted uploadEPSS 0.3%CVE-2024-12042MEDIUMMStore API – Create Native Android & iOS Apps On The Cloud <= 4.16.4 - Authenticated (Subscriber+) HTML File Upload (Stored Cross-Site Scripting)EPSS 0.3%