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-2024-4560CRITICALKognetiks Chatbot for WordPress <= 1.9.9 - Unauthenticated Arbitrary File Upload via chatbot_chatgpt_upload_file_to_assistant FunctionEPSS 0.9%CVE-2025-67325CRITICALUnrestricted file upload in the hotel review feature in QloApps versions 1.7.0 and earlier allows remote unauthenticated attackers to achievEPSS 0.9%CVE-2021-23280HIGHArbitrary File uploadEPSS 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%CVE-2022-0962CRITICALStored XSS viva .webma file upload in star7th/showdocEPSS 0.9%CVE-2026-105032CRITICALEnergizeLab Eilik AI Skill Upload Unauthenticated Path Traversal Arbitrary File WriteEPSS 0.9%CVE-2023-27033CRITICALPrestashop cdesigner v3.1.3 to v3.1.8 was discovered to contain a code injection vulnerability via the component CdesignerSaverotateModuleFrEPSS 0.9%CVE-2023-3804MEDIUMChengdu Flash Flood Disaster Monitoring and Warning System FileHandler.ashx unrestricted uploadEPSS 0.9%CVE-2025-29017HIGHA Remote Code Execution (RCE) vulnerability exists in Code Astro Internet Banking System 2.0.0 due to improper file upload validation in theEPSS 0.9%CVE-2024-48454HIGHAn issue in SourceCodester Purchase Order Management System v1.0 allows a remote attacker to execute arbitrary code via the /admin?page=userEPSS 0.9%CVE-2026-80235CRITICALThinking Software Technology｜EFence - Arbitrary File UploadEPSS 0.9%CVE-2024-35570CRITICALAn arbitrary file upload vulnerability in the component \controller\ImageUploadController.class of inxedu v2.0.6 allows attackers to executeEPSS 0.9%CVE-2026-25510CRITICALCI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in File EditorEPSS 0.9%CVE-2023-1942MEDIUMSourceCodester Online Computer and Laptop Store Avatar unrestricted uploadEPSS 0.9%CVE-2023-5790MEDIUMSourceCodester File Manager App add-file.php unrestricted uploadEPSS 0.9%CVE-2025-2006HIGHInline Image Upload for BBPress <= 1.1.19 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 0.9%CVE-2023-3491HIGHUnrestricted Upload of File with Dangerous Type in fossbilling/fossbillingEPSS 0.9%CVE-2023-3798MEDIUMChengdu Flash Flood Disaster Monitoring and Warning System upload.aspx unrestricted uploadEPSS 0.9%CVE-2022-47854CRITICALi-librarian 4.10 is vulnerable to Arbitrary file upload in ajaxsupplement.php.EPSS 0.9%