Weaknesses of type CWE-434

3,255 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-2022-2180—GREYD.SUITE < 1.2.7 - Unauthenticated File Upload to RCEEPSS 2.5%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-2023-4121MEDIUMByzoro Smart S85F Management Platform unrestricted uploadEPSS 2.5%CVE-2026-10818HIGHWPForms Pro <= 1.10.1.1 - Unauthenticated Arbitrary File Write via Chunked Upload Init/Finalize OrderingEPSS 2.5%CVE-2024-4964MEDIUMD-Link DAR-7000-40 urlblist.php unrestricted uploadEPSS 2.5%CVE-2024-4962MEDIUMD-Link DAR-7000-40 resmanage.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-2025-0520CRITICALShowDoc < 2.8.7 Unauthenticated File Upload Remote Code ExecutionEPSS 2.4%CVE-2023-33480HIGHRemoteClinic 2.0 contains a critical vulnerability chain that can be exploited by a remote attacker with low-privileged user credentials to EPSS 2.4%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-2021-35963CRITICALLearningdigital.com, Inc. Orca HCM - Unrestricted Upload of File with Dangerous TypeEPSS 2.4%CVE-2025-3835CRITICALRemote Code ExecutionEPSS 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-2024-1918MEDIUMByzoro Smart S42 Management Platform userattestation.php unrestricted uploadEPSS 2.3%CVE-2019-25138CRITICALUser Submitted Posts <= 20190312 - Unauthenticated Arbitrary File UploadEPSS 2.3%CVE-2016-15033CRITICALDelete All Comments <= 2.0 - Arbitrary File UploadEPSS 2.3%