Falhas do tipo CWE-434

3.236 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-2024-7484HIGHCRM Perks Forms <= 1.1.3 - Authenticated (Administrator+) Arbitrary File UploadEPSS 0.9%CVE-2026-54177MEDIUMbackpack/crud: HasUploadFields keeps the attacker-supplied file extension — public-disk uploads of `shell.php` reach the webserverEPSS 0.9%CVE-2020-37113HIGHGUnet OpenEclass 1.7.3 E-learning platform - File Upload Extension BypassEPSS 0.9%CVE-2023-32753CRITICALITPison OMICARD EDM - Arbitrary File UploadEPSS 0.9%CVE-2023-32757CRITICALe-Excellence U-Office Force - Arbitrary File UploadEPSS 0.9%CVE-2023-37289CRITICALInfoDoc Document On-line Submission and Approval System - Arbitrary File UploadEPSS 0.9%CVE-2022-43436HIGHHWA JIUH DIGITAL TECHNOLOGY LTD. EasyTest - Arbitrary File UploadEPSS 0.9%CVE-2022-1033HIGHUnrestricted Upload of File with Dangerous Type in crater-invoice/craterEPSS 0.9%CVE-2024-54918CRITICALKashipara E-learning Management System v1.0 is vulnerable to Remote Code Execution via File Upload in /teacher_avatar.php.EPSS 0.9%CVE-2023-53889HIGHPerch CMS 3.2 Remote Code Execution via Unrestricted File UploadEPSS 0.9%CVE-2023-53885HIGHWebutler v3.2 Remote Code Execution via Arbitrary File UploadEPSS 0.9%CVE-2020-22755HIGHFile upload vulnerability in MCMS 5.0 allows attackers to execute arbitrary code via a crafted thumbnail. A different vulnerability than CVEEPSS 0.9%CVE-2026-14494CRITICALSigma Forms Pro <= 1.4.5 - Unauthenticated Unauthenticated Arbitrary File Upload Leading to Remote Code Execution via Pre-built Template File Upload FieldEPSS 0.9%CVE-2026-75865CRITICALWPLP Cookie Consent <= 4.4.1 - Unauthenticated Arbitrary File Upload via 'upload-logo' REST EndpointEPSS 0.9%CVE-2024-45171HIGHAn issue was discovered in za-internet C-MOR Video Surveillance 5.2401. Due to improper user input validation, it is possible to upload dangEPSS 0.9%CVE-2024-1527CRITICALUnrestricted Upload of File with Dangerous Type in CMS Made SimpleEPSS 0.9%CVE-2025-66802CRITICALSourcecodester Covid-19 Contact Tracing System 1.0 is vulnerable to RCE (Remote Code Execution). The application receives a reverse shell (pEPSS 0.9%CVE-2024-13333HIGHAdvanced File Manager 5.2.12 - 5.2.13 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 0.9%CVE-2025-3917CRITICAL百度站长SEO合集(支持百度/神马/Bing/头条推送) <= 2.0.6 - Unauthenticated Arbitrary File UploadEPSS 0.9%CVE-2025-25784CRITICALAn arbitrary file upload vulnerability in the component \c\TemplateController.php of Jizhicms v2.5.4 allows attackers to execute arbitrary cEPSS 0.9%