Fallos del tipo CWE-434

3255 resultados

Upload irrestrito de arquivo com tipo perigoso

Ocorre quando a aplicação aceita upload de arquivos sem validar adequadamente o tipo ou extensão, permitindo que um atacante envie executáveis, scripts ou outros arquivos maliciosos. O risco é grave: o arquivo pode ser armazenado em local acessível pela web, executado pelo servidor, ou baixado e executado pela vítima.

Ejemplo

Um formulário de perfil aceita qualquer arquivo como 'foto', sem verificação. Alguém faz upload de um .exe ou .php; se salvo em pasta pública e com permissões erradas, o arquivo pode ser executado pelo servidor ou baixado por outros usuários.

Cómo mitigar

Valide a extensão e o tipo MIME no servidor (nunca apenas no cliente), rejeite extensões perigosas explicitamente, armazene uploads fora da raiz web ou sem permissão de execução, e considere renomear arquivos removendo extensão original. Idealmente, converta imagens para formatos seguros (PNG/JPG) após upload.

CVE-2017-3189—The dotCMS administration panel, versions 3.7.1 and earlier, "Push Publishing" feature in Enterprise Pro is vulnerable to arbitrary file uploadEPSS 6.5%CVE-2025-6058CRITICALWPBookit <= 1.0.4 - Unauthenticated Arbitrary File UploadEPSS 6.2%CVE-2020-20969HIGHFile Upload vulnerability in PluckCMS v.4.7.10 allows a remote attacker to execute arbitrary code via the trashcan_restoreitem.php file.EPSS 6.2%CVE-2024-2561MEDIUM74CMS Company Logo Index.php#sendCompanyLogo unrestricted uploadEPSS 6.1%CVE-2021-37608—Arbitrary file upload vulnerability in OFBizEPSS 6.0%CVE-2025-3515HIGHDrag and Drop Multiple File Upload for Contact Form 7 <= 1.3.8.9 - Unauthenticated Arbitrary File Upload via Insufficient Blacklist ChecksEPSS 6.0%CVE-2023-5144MEDIUMD-Link DAR-7000/DAR-8000 updateos.php unrestricted uploadEPSS 6.0%CVE-2023-0455HIGHUnrestricted Upload of File with Dangerous Type in unilogies/bumsysEPSS 5.9%CVE-2024-2667CRITICALInstaWP Connect – 1-click WP Staging & Migration <= 0.1.0.22 - Unauthenticated Arbitrary File UploadEPSS 5.7%CVE-2024-0300MEDIUMByzoro Smart S150 Management Platform HTTP POST Request userattestation.php unrestricted uploadEPSS 5.7%CVE-2026-53787CRITICALAmasty Order Attributes for Magento 2 < 4.0.0 Unauthenticated Arbitrary File UploadEPSS 5.6%CVE-2022-44384HIGHAn arbitrary file upload vulnerability in rconfig v3.9.6 allows attackers to execute arbitrary code via a crafted PHP file.EPSS 5.6%CVE-2026-21877CRITICALn8n is vulnerable to Remote Code Execution via Arbitrary File WriteEPSS 5.4%CVE-2015-10137CRITICALWebsite Contact Form With File Upload <= 1.3.4 - Arbitrary File UploadEPSS 5.4%CVE-2021-4449CRITICALZoomSounds <= 5.96 - Unauthenticated Arbitrary File UploadEPSS 5.4%CVE-2020-24407CRITICALArbitrary code execution via file import functionalityEPSS 5.3%CVE-2021-36741HIGHAn improper input validation vulnerability in Trend Micro Apex One, Apex One as a Service, OfficeScan XG, and Worry-Free Business Security 1EPSS 5.0%KEVCVE-2026-1306CRITICALmidi-Synth <= 1.1.0 - Unauthenticated Arbitrary File Upload via 'export' AJAX ActionEPSS 4.8%CVE-2012-10020CRITICALFoxyPress <= 0.4.2.1 - Arbitrary File UploadEPSS 4.8%CVE-2021-39151HIGHXStream is vulnerable to an Arbitrary Code Execution attackEPSS 4.7%