Weaknesses of type CWE-434

3,091 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-2022-42971CRITICALA CWE-434: Unrestricted Upload of File with Dangerous Type vulnerability exists that could cause remote code execution when the attacker uplEPSS 1.1%CVE-2022-44052CRITICALThe d8s-dates for python, as distributed on PyPI, included a potential code-execution backdoor inserted by a third party. A potential code eEPSS 1.1%CVE-2026-26984HIGHLORIS media module vulnerable to remote code executionEPSS 1.1%CVE-2022-44400CRITICALPurchase Order Management System v1.0 contains a file upload vulnerability via /purchase_order/admin/?page=system_info.EPSS 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-2026-2942CRITICALProSolution WP Client <= 1.9.9 - Unauthenticated Arbitrary File Upload via proSol_fileUploadProcessEPSS 1.1%CVE-2026-22786HIGHGin-vue-admin has arbitrary file upload vulnerability caused by path traversalEPSS 1.1%CVE-2026-15158CRITICALBlocksy Companion <= 2.1.46 - Unauthenticated Arbitrary File Upload via 'blc-review-images[]' ParameterEPSS 1.1%CVE-2024-50493CRITICALWordPress Automatic Translation plugin <= 1.0.4 - Arbitrary File Upload vulnerabilityEPSS 1.1%CVE-2024-50482CRITICALWordPress Woocommerce Product Design plugin <= 1.0.0 - Arbitrary File Upload vulnerabilityEPSS 1.1%CVE-2025-12352CRITICALGravity Forms <= 2.9.20 - Unauthenticated Arbitrary File Upload via 'copy_post_image'EPSS 1.1%CVE-2024-3437MEDIUMSourceCodester Prison Management System Avatar add-admin.php unrestricted uploadEPSS 1.1%CVE-2024-50473CRITICALWordPress Ajar in5 Embed plugin <= 3.1.3 - 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-2022-43146HIGHAn arbitrary file upload vulnerability in the image upload function of Canteen Management System v1.0 allows attackers to execute arbitrary EPSS 1.1%CVE-2024-9660HIGHSchool Management <= 91.5.0 - Authenticated (Student+) Arbitrary File UploadEPSS 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-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-2022-41538HIGHWedding Planner v1.0 was discovered to contain an arbitrary file upload vulnerability in the component /Wedding-Management-PHP/admin/photos_EPSS 1.1%CVE-2021-42123HIGHMissing Upload Filter in TopEaseEPSS 1.1%