Weaknesses of type CWE-434

3,083 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-2023-3486HIGHPaperCut NG Unauthenticated File UploadEPSS 79.2%CVE-2017-11357CRITICALProgress Telerik UI for ASP.NET AJAX before R2 2017 SP2 does not properly restrict user input to RadAsyncUpload, which allows remote attackeEPSS 77.7%KEVCVE-2021-21346MEDIUMXStream is vulnerable to an Arbitrary Code Execution attackEPSS 76.4%CVE-2023-4220HIGHChamilo LMS Unauthenticated Big Upload File Remote Code ExecutionEPSS 76.1%CVE-2021-21344MEDIUMXStream is vulnerable to an Arbitrary Code Execution attackEPSS 76.0%CVE-2023-3836MEDIUMDahua Smart Park Management unrestricted uploadEPSS 73.7%CVE-2024-0352HIGHLikeshop HTTP POST Request File.php userFormImage unrestricted uploadEPSS 72.9%CVE-2025-34299CRITICALMonsta FTP <= 2.11 Unauthenticated Arbitrary File UploadEPSS 72.9%CVE-2023-2034CRITICALUnrestricted Upload of File with Dangerous Type in froxlor/froxlorEPSS 71.4%CVE-2024-53677CRITICALApache Struts: Mixing setters for uploaded files and normal fields can allow bypass file upload checksEPSS 70.1%CVE-2021-34995HIGHThis vulnerability allows remote attackers to execute arbitrary code on affected installations of Commvault CommCell 11.22.22. Although authEPSS 68.9%CVE-2023-38095HIGHNETGEAR ProSAFE Network Management System MFileUploadController Unrestricted File Upload Remote Code Execution VulnerabilityEPSS 65.5%CVE-2024-29848HIGHAn unrestricted file upload vulnerability in web component of Ivanti Avalanche before 6.4.x allows an authenticated, privileged user to execEPSS 64.4%CVE-2019-8394HIGHZoho ManageEngine ServiceDesk Plus (SDP) before 10.0 build 10012 allows remote attackers to upload arbitrary files via login page customizatEPSS 63.3%KEVCVE-2023-51409CRITICALWordPress AI Engine plugin <= 1.9.98 - Unauthenticated Arbitrary File Upload vulnerabilityEPSS 63.1%CVE-2026-0740CRITICALNinja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File UploadEPSS 62.9%CVE-2023-27179HIGHGDidees CMS v3.9.1 and lower was discovered to contain an arbitrary file download vulenrability via the filename parameter at /_admin/imgdowEPSS 60.8%CVE-2025-2748MEDIUMKentico Xperience stored cross-site scripting in multiple-file upload functionalityEPSS 60.6%CVE-2025-5961HIGHMigration, Backup, Staging – WPvivid Backup & Migration <= 0.9.116 - Authenticated (Administrator+) Arbitrary File UploadEPSS 60.4%CVE-2021-24499—Workreap theme < 2.2.2 - Unauthenticated Upload Leading to Remote Code ExecutionEPSS 60.1%