Falhas do tipo CWE-434

3.086 resultados

Upload irrestrito de arquivo com tipo perigoso

A aplicação aceita upload de arquivos sem validar adequadamente o tipo ou extensão, permitindo que um atacante envie executáveis, scripts ou outros arquivos maliciosos que serão armazenados ou executados no servidor. O risco aumenta se o arquivo for salvo em diretório acessível pela web ou em local onde será processado automaticamente.

Exemplo

Um sistema de upload de 'fotos de perfil' verifica apenas o tamanho do arquivo, mas não valida a extensão. Um atacante envia um arquivo .php disfarçado de imagem; se salvo em /uploads/ acessível via web, ele consegue executar código PHP no servidor ao acessar a URL direta.

Como mitigar

Valide extensões contra uma lista branca (whitelist) de tipos permitidos, verifique a assinatura do arquivo (magic bytes) e não confie apenas no Content-Type do cliente. Armazene uploads fora do diretório web ou configure o servidor para não executar scripts no diretório de uploads.

CVE-2024-13714HIGHAll-Images.ai – IA Image Bank and Custom Image creation <= 1.0.4 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 1.0%CVE-2023-3802MEDIUMChengdu Flash Flood Disaster Monitoring and Warning System Ajaxfileupload.ashx unrestricted uploadEPSS 1.0%CVE-2021-47758HIGHChikitsa Patient Management System 2.0.2 - Remote Code Execution (RCE) (Authenticated)EPSS 1.0%CVE-2026-4885CRITICALPiotnet Addons for Elementor Pro <= 7.1.70 - Unauthenticated Arbitrary File Upload via Form File UploadEPSS 1.0%CVE-2026-14158HIGHWidget Logic Visual <= 1.52 - Authenticated (Subscriber+) Remote Code Execution via 'nwlv[cod-tag]' ParameterEPSS 1.0%CVE-2024-28269HIGHReCrystallize Server 5.10.0.0 allows administrators to upload files to the server. The file upload is not restricted, leading to the abilityEPSS 1.0%CVE-2016-20052CRITICALSnews CMS 1.7 Unrestricted File Upload via snews_filesEPSS 1.0%CVE-2023-26857HIGHAn arbitrary file upload vulnerability in /admin/ajax.php?action=save_uploads of Dynamic Transaction Queuing System v1.0 allows attackers toEPSS 0.9%CVE-2022-2046—Directorist - Business Directory Plugin < 7.2.3 - Admin+ Arbitrary File UploadEPSS 0.9%CVE-2024-5047MEDIUMSourceCodester Student Management System controller.php unrestricted uploadEPSS 0.9%CVE-2024-8126HIGHAdvanced File Manager <= 5.2.8 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 0.9%CVE-2023-53980HIGHProjectSend r1605 Remote Code Execution via File Extension ManipulationEPSS 0.9%CVE-2021-38397CRITICALHoneywell Experion PKS and ACE Controllers Unrestricted Upload of File with Dangerous TypeEPSS 0.9%CVE-2023-33601HIGHAn arbitrary file upload vulnerability in /admin.php?c=upload of phpok v6.4.100 allows attackers to execute arbitrary code via a crafted PHPEPSS 0.9%CVE-2024-31210HIGHPHP file upload bypass via Plugin installerEPSS 0.9%CVE-2023-53924HIGHUliCMS 2023.1-sniffing-vicuna Remote Code Execution via Avatar UploadEPSS 0.9%CVE-2024-58281HIGHDotclear 2.29 Remote Code Execution via Authenticated File UploadEPSS 0.9%CVE-2023-25909CRITICALHGiga Inc. OAKlouds - Arbitrary File UploadEPSS 0.9%CVE-2023-25970CRITICALWordPress Zendrop – Global Dropshipping Plugin <= 1.0.0 is vulnerable to Arbitrary File UploadEPSS 0.9%CVE-2022-0409HIGHUnrestricted Upload of File with Dangerous Type in star7th/showdocEPSS 0.9%