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-2022-1034CRITICALThere is a Unrestricted Upload of File vulnerability in ShowDoc v2.10.3 in star7th/showdocEPSS 1.5%CVE-2025-7437CRITICALEbook Store <= 5.8012 - Unauthenticated Arbitrary File UploadEPSS 1.5%CVE-2024-28105HIGHphpMyFAQ's File Upload Bypass at Category Image Leads to RCEEPSS 1.5%CVE-2023-5185CRITICALGym Management System Project v1.0 - Insecure File UploadEPSS 1.5%CVE-2022-1273—Import WP < 2.4.6 - Admin+ Arbitrary File Upload to RCEEPSS 1.5%CVE-2022-1409—VikBooking Hotel Booking Engine & PMS < 1.5.8 - Admin+ PHP File UploadEPSS 1.5%CVE-2021-25119—AGIL <= 1.0 - Admin+ Arbitrary File UploadEPSS 1.5%CVE-2024-54262CRITICALWordPress Import Export For WooCommerce plugin <= 1.6.2 - Arbitrary File Upload vulnerabilityEPSS 1.5%CVE-2022-0687—Amelia < 1.0.46 - Manager+ RCEEPSS 1.5%CVE-2024-27311MEDIUMArbitrary file writingEPSS 1.5%CVE-2023-40050CRITICALAutomate Vulnerable to Malicious Content Uploaded Through Embedded Compliance ApplicationEPSS 1.5%CVE-2024-37762CRITICALMachForm up to version 21 is affected by an authenticated unrestricted file upload which leads to a remote code execution.EPSS 1.5%CVE-2024-4345CRITICALStartklar Elementor Addons <= 1.7.13 - Unauthenticated Arbitrary File UploadEPSS 1.5%CVE-2020-22151—Permissions vulnerability in Fuel-CMS v.1.4.6 allows a remote attacker to execute arbitrary code via a crafted zip file to the assests paramEPSS 1.5%CVE-2022-1939—Allow SVG Files < 1.1 - Admin+ Arbitrary File UploadEPSS 1.4%CVE-2026-16329MEDIUMD-Link DNS-320 uploadify.php unrestricted uploadEPSS 1.4%CVE-2026-16332MEDIUMD-Link DNS-320 multi_uploadify.php unrestricted uploadEPSS 1.4%CVE-2022-0440—Catch Themes Demo Import < 2.1.1 - Admin+ Remote Code ExecutionEPSS 1.4%CVE-2022-43303CRITICALThe d8s-strings for python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. A potential codeEPSS 1.4%CVE-2022-43305CRITICALThe d8s-python for python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. A potential code EPSS 1.4%