Falhas do tipo CWE-434

3.246 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-2026-15158CRITICALBlocksy Companion <= 2.1.46 - Unauthenticated Arbitrary File Upload via 'blc-review-images[]' ParameterEPSS 1.1%CVE-2024-7770HIGHBit File Manager – 100% Free & Open Source File Manager and Code Editor for WordPress <= 6.5.5 - Authenticated (Subscriber+) Arbitrary File UploadEPSS 1.1%CVE-2024-50473CRITICALWordPress Ajar in5 Embed plugin <= 3.1.3 - Arbitrary File Upload vulnerabilityEPSS 1.1%CVE-2024-3437MEDIUMSourceCodester Prison Management System Avatar add-admin.php unrestricted uploadEPSS 1.1%CVE-2026-93352CRITICALLaravel-Mediable 7.0.0 < 7.0.2 RCE via .pht File UploadEPSS 1.1%CVE-2024-50482CRITICALWordPress Woocommerce Product Design plugin <= 1.0.0 - Arbitrary File Upload vulnerabilityEPSS 1.1%CVE-2024-50493CRITICALWordPress Automatic Translation plugin <= 1.0.4 - Arbitrary File Upload vulnerabilityEPSS 1.1%CVE-2023-31576HIGHAn arbitrary file upload vulnerability in Serendipity 2.4-beta1 allows attackers to execute arbitrary code via a crafted HTML or Javascript EPSS 1.1%CVE-2022-40217MEDIUMWordPress WPide plugin <= 2.6 - Authenticated Arbitrary File Edit/Upload vulnerabilityEPSS 1.1%CVE-2024-9660HIGHSchool Management <= 91.5.0 - Authenticated (Student+) Arbitrary File UploadEPSS 1.1%CVE-2026-5364HIGHDrag and Drop File Upload for Contact Form 7 <= 1.1.3 - Unauthenticated Arbitrary File Upload via sanitize_file_name BypassEPSS 1.1%CVE-2024-22824CRITICALAn issue in Timo v.2.0.3 allows a remote attacker to execute arbitrary code via the filetype restrictions in the UploadController.java compoEPSS 1.1%CVE-2023-22851HIGHTiki before 24.2 allows lib/importer/tikiimporter_blog_wordpress.php PHP Object Injection by an admin because of an unserialize call.EPSS 1.1%CVE-2021-36426HIGHFile Upload vulnerability in phpwcms 1.9.25 allows remote attackers to run arbitrary code via crafted file upload to include/inc_lib/generalEPSS 1.1%CVE-2021-42123HIGHMissing Upload Filter in TopEaseEPSS 1.1%CVE-2023-29635CRITICALFile upload vulnerability in Antabot White-Jotter v0.2.2, allows remote attackers to execute malicious code via the file parameter to functiEPSS 1.1%CVE-2020-20735CRITICALFile Upload vulnerability in LJCMS v.4.3.R60321 allows a remote attacker to execute arbitrary code via the ljcms/index.php parameter.EPSS 1.1%CVE-2023-39346HIGHbjrjk/LinuxASMCallGraph before commit 20dba06 allows attackers to cause a RCE on the server side via uploading a crafted ZIP file due to incorrect filtering rules of uploaded fileEPSS 1.1%CVE-2023-39970—Extension - acymailing.com - RCE in AcyMailing component for Joomla 6.7.0-8.5.0EPSS 1.1%CVE-2026-103535HIGHCVE-2026-103535EPSS 1.1%