Weaknesses of type CWE-434

3,090 results

Upload sem restrição de arquivo com tipo perigoso

Ocorre quando uma aplicação aceita upload de arquivos sem validar adequadamente seu tipo, extensão ou conteúdo. Um atacante pode enviar executáveis, scripts ou outros arquivos maliciosos, que serão armazenados ou executados no servidor, comprometendo sua integridade e segurança.

Example

Um formulário de perfil aceita qualquer arquivo como 'foto do usuário' sem checar extensão ou MIME type. Um atacante envia um arquivo .exe ou .php renomeado como .jpg, que é salvo no diretório web e posteriormente executado quando acessado, permitindo execução de código remoto.

How to mitigate

Valide uploads checando MIME type real (não apenas extensão), restrinja tipos permitidos de forma explícita, armazene arquivos fora da raiz web, desabilite execução de scripts no diretório de upload e considere usar vírus scanner. Implemente whitelist rigorosa, nunca blacklist.

CVE-2024-32700CRITICALWordPress Kognetiks Chatbot for WordPress plugin <= 2.0.0 - Arbitrary File Upload vulnerabilityEPSS 2.6%CVE-2026-28289CRITICALFreeScout 1.8.206 Patch Bypass for CVE-2026-27636 via Zero-Width Space Character Leads to Remote Code ExecutionEPSS 2.6%CVE-2017-16594—This vulnerability allows remote attackers to create arbitrary files on vulnerable installations of NetGain Systems Enterprise Manager 7.2.7EPSS 2.6%CVE-2023-3187MEDIUMPHPGurukul Teachers Record Management System Profile Picture changeimage.php unrestricted uploadEPSS 2.6%CVE-2019-10959—BD Alaris Gateway Workstation Versions, 1.1.3 Build 10, 1.1.3 MR Build 11, 1.2 Build 15, 1.3.0 Build 14, 1.3.1 Build 13, This does not impacEPSS 2.5%CVE-2022-2180—GREYD.SUITE < 1.2.7 - Unauthenticated File Upload to RCEEPSS 2.5%CVE-2025-3616HIGHGreenshift 11.4 - 11.4.5 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 2.5%CVE-2023-4121MEDIUMByzoro Smart S85F Management Platform unrestricted uploadEPSS 2.5%CVE-2024-4962MEDIUMD-Link DAR-7000-40 resmanage.php unrestricted uploadEPSS 2.5%CVE-2024-4964MEDIUMD-Link DAR-7000-40 urlblist.php unrestricted uploadEPSS 2.5%CVE-2024-22393CRITICALApache Answer: Pixel Flood Attack by uploading the large pixel fileEPSS 2.5%CVE-2023-4226HIGHChamilo LMS File Upload Functionality Remote Code ExecutionEPSS 2.5%CVE-2021-42839HIGHGrand Vice info Co. webopac7 - Arbitrary File UploadEPSS 2.4%CVE-2021-24222—WP-Curricul Vitea Free <= 6.3 - Unauthenticated Arbitrary File Upload to RCEEPSS 2.4%CVE-2025-34121CRITICALIdera Up.Time ≤ 7.2 post2file.php Arbitrary File Upload RCEEPSS 2.4%CVE-2021-35963CRITICALLearningdigital.com, Inc. Orca HCM - Unrestricted Upload of File with Dangerous TypeEPSS 2.4%CVE-2020-7569—A CWE-434 Unrestricted Upload of File with Dangerous Type vulnerability exists in EcoStruxure Building Operation WebReports V1.9 - V3.1 thatEPSS 2.4%CVE-2017-9650—An Unrestricted Upload of File with Dangerous Type issue was discovered in Automated Logic Corporation (ALC) ALC WebCTRL, i-Vu, SiteScan WebEPSS 2.4%CVE-2024-7985HIGHFileOrganizer <= 1.0.9 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 2.4%CVE-2026-38526CRITICALAn authenticated arbitrary file upload vulnerability in the /admin/tinymce/upload endpoint of Webkul Krayin CRM v2.2.x allows attackers to eEPSS 2.4%