Weaknesses of type CWE-434

3,113 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-2026-22707MEDIUMStrapi Upload Plugin MIME Validation Bypass via Content APIEPSS 0.2%CVE-2025-36183LOWPrivileged User File Upload Vulnerability Leading to Limited Server-Side Execution affects watsonx.dataEPSS 0.2%CVE-2026-45315HIGHOpen WebUI: Stored XSS via attacker-controlled file extension in /api/v1/audio/transcriptionsEPSS 0.2%CVE-2018-25258HIGHRGui 3.5.0 Local Buffer Overflow SEH DEP BypassEPSS 0.2%CVE-2025-40808MEDIUMA vulnerability has been identified in SIPROTEC 5 6MD84 (CP300) (All versions), SIPROTEC 5 6MD85 (CP200) (All versions), SIPROTEC 5 6MD85 (CEPSS 0.2%CVE-2022-0517HIGHMozilla VPN can load an OpenSSL configuration file from an unsecured directory. A user or attacker with limited privileges could leverage thEPSS 0.2%CVE-2022-2791MEDIUMEmerson Electric's Proficy Machine Edition Version 9.00 and prior is vulnerable to CWE-434 Unrestricted Upload of File with Dangerous Type, EPSS 0.2%CVE-2025-48953MEDIUMUmbraco Vulnerable to By-Pass of Configured Allowed Extensions for File UploadsEPSS 0.2%CVE-2024-34692LOW[CVE-2024-34692] Unrestricted File upload vulnerability in SAP Enable NowEPSS 0.2%CVE-2026-3219MEDIUMpip doesn't reject concatenated ZIP and tar archivesEPSS 0.2%CVE-2023-31428MEDIUMCLI allows upload or transfer files of dangerous typesEPSS 0.2%CVE-2026-9157HIGHRemote Code Execution in Gmission Web FAXEPSS 0.2%CVE-2026-30280MEDIUMAn arbitrary file overwrite vulnerability in RAREPROB SOLUTIONS PRIVATE LIMITED Video player Play All Videos v1.0.135 allows attackers to ovEPSS 0.2%CVE-2025-47939MEDIUMTYPO3 CMS Vulnerable to Unrestricted File Upload in File Abstraction LayerEPSS 0.2%CVE-2026-27146HIGHGetSimple CMS: Cross-Site Request Forgery (CSRF) in File Upload Allows Arbitrary UploadsEPSS 0.2%CVE-2024-28520MEDIUMFile Upload vulnerability in Byzoro Networks Smart multi-service security gateway intelligent management platform version S210, allows an atEPSS 0.2%CVE-2024-47151MEDIUMSome Honor products are affected by file writing vulnerability, successful exploitation could cause code executionEPSS 0.2%CVE-2025-13462LOWtarfile: Skip DIRTYPE normalization during GNU LONGNAME/LONGLINK handlingEPSS 0.2%CVE-2026-102366LOWmall4j through 4.0 Unrestricted File Upload in Admin File EndpointsEPSS 0.2%CVE-2025-24815HIGHAn unrestricted file upload vulnerability in Nokia MantaRay NMEPSS 0.2%