Falhas do tipo CWE-434

3.244 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-2020-15277HIGHRemote Code Execution in baserCMSEPSS 2.3%CVE-2024-4960MEDIUMD-Link DAR-7000-40 licenseauthorization.php unrestricted uploadEPSS 2.3%CVE-2024-4961MEDIUMD-Link DAR-7000-40 onlineuser.php unrestricted uploadEPSS 2.3%CVE-2009-20006CRITICALosCommerce <= 2.2 Admin File Manager Arbitrary PHP Code ExecutionEPSS 2.3%CVE-2013-10044HIGHOpenEMR ≤ 4.1.1 SQL Injection Privilege Escalation and RCEEPSS 2.3%CVE-2025-4403CRITICALDrag and Drop Multiple File Upload for WooCommerce <= 1.1.6 - Unauthenticated Arbitrary File Upload via upload FunctionEPSS 2.3%CVE-2022-40035HIGHFile Upload Vulnerability found in Rawchen Blog-ssm v1.0 allowing attackers to execute arbitrary commands and gain escalated privileges via EPSS 2.3%CVE-2023-47873CRITICALWordPress WP Child Theme Generator plugin <= 1.0.9 - Arbitrary File Upload vulnerabilityEPSS 2.3%CVE-2023-0943MEDIUMSourceCodester Best POS Management System Image save_settings unrestricted uploadEPSS 2.3%CVE-2024-13869HIGHMigration, Backup, Staging – WPvivid <= 0.9.112 - Authenticated (Admin+) Arbitrary File Upload via wpvivid_upload_fileEPSS 2.3%CVE-2021-3832CRITICALIntegria IMS Remote Code ExecutionEPSS 2.3%CVE-2020-26295HIGHCMS Editor code executionEPSS 2.2%CVE-2026-27636HIGHFreeScout: Missing .htaccess in Restricted File Extensions Allows Remote Code Execution on ApacheEPSS 2.2%CVE-2021-24223—N5 Upload Form <= 1.0 - Unauthenticated Arbitrary File Upload to RCEEPSS 2.2%CVE-2022-4949HIGHAdSanity < 1.8.2 - Authenticated Arbitrary File UploadEPSS 2.2%CVE-2020-36706CRITICALSimple:Press – WordPress Forum Plugin <= 6.6.0 - Arbitrary File UploadEPSS 2.2%CVE-2022-34965HIGHOpenTeknik LLC OSSN OPEN SOURCE SOCIAL NETWORK v6.3 LTS was discovered to contain an arbitrary file upload vulnerability via the component /EPSS 2.2%CVE-2023-5822HIGHDrag and Drop Multiple File Upload - Contact Form 7 <= 1.3.7.3 - Unauthenticated Arbitrary File UploadEPSS 2.2%CVE-2020-26252HIGHLayout XML RCE Vulnerability in OpenMageEPSS 2.1%CVE-2026-18143CRITICALRequest a Quote for WooCommerce <= 2.9.2 - Unauthenticated Arbitrary File Upload via AJAX Popup HandlerEPSS 2.1%