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-2023-29375CRITICALAn issue was discovered in Progress Sitefinity 13.3 before 13.3.7647, 14.0 before 14.0.7736, 14.1 before 14.1.7826, 14.2 before 14.2.7930, aEPSS 0.8%CVE-2020-37090HIGHSchool ERP Pro 1.0 - Remote Code ExecutionEPSS 0.8%CVE-2026-80233HIGHCAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP - Arbitrary File UploadEPSS 0.8%CVE-2026-4808HIGHGerador de Certificados – DevApps <= 1.3.6 - Authenticated (Administrator+) Arbitrary File UploadEPSS 0.8%CVE-2023-3032HIGHMobatime web application - Arbitrary file upload (RCE)EPSS 0.8%CVE-2026-26212HIGHRara One Click Demo Import < 1.3.5 Arbitrary File Upload RCEEPSS 0.8%CVE-2022-41267CRITICALSAP Business Objects Platform - versions 420, and 430, allows an attacker with normal BI user privileges to upload/replace any file on BusinEPSS 0.8%CVE-2026-70558CRITICALDinky Unauthenticated Arbitrary File Write via /download/uploadFromRsByLocal Gated Only by Hardcoded Default TokenEPSS 0.8%CVE-2026-26746HIGHOpenSourcePOS 3.4.1 contains a Local File Inclusion (LFI) vulnerability in the Sales.php::getInvoice() function. An attacker can read arbitrEPSS 0.8%CVE-2024-46479CRITICALVenki Supravizio BPM through 18.0.1 was discovered to contain an arbitrary file upload vulnerability. An authenticated attacker may upload aEPSS 0.8%CVE-2024-12854HIGHGarden Gnome Package <= 2.3.0 - Authenticated (Author+) Arbitrary File UploadEPSS 0.8%CVE-2023-33318CRITICALWordPress WooCommerce Follow-Up Emails Plugin <= 4.9.40 is vulnerable to Arbitrary File UploadEPSS 0.8%CVE-2023-7309CRITICALDahua Smart Park Integrated Management Platform Front-End Arbitrary File UploadEPSS 0.8%CVE-2025-7075MEDIUMBlackVue Dashcam 590X HTTP Endpoint upload.cgi unrestricted uploadEPSS 0.8%CVE-2024-3863CRITICALThe executable file warning was not presented when downloading .xrm-ms files. *Note: This issue only affected Windows operating systems. OEPSS 0.8%CVE-2024-40400HIGHAn arbitrary file upload vulnerability in the image upload function of Automad v2.0.0 allows attackers to execute arbitrary code via a craftEPSS 0.8%CVE-2021-24981—Directorist – Business Directory Plugin < 7.0.6.2 - CSRF to Remote File UploadEPSS 0.8%CVE-2024-48782CRITICALFile Upload vulnerability in DYCMS Open-Source Version v2.0.9.41 allows a remote attacker to execute arbitrary code via the application onlyEPSS 0.8%CVE-2023-23656CRITICALWordPress MainWP File Uploader Extension Plugin <= 4.1 - Unauthenticated Arbitrary File Upload VulnerabilityEPSS 0.8%CVE-2022-46493CRITICALDefault version of nbnbk was discovered to contain an arbitrary file upload vulnerability via the component /api/User/download_img.EPSS 0.8%