Falhas do tipo CWE-284

7.967 resultados

Controle de acesso inadequado a recursos

A aplicação falha em validar ou aplica incorretamente as restrições de acesso, permitindo que usuários não autorizados acessem dados ou funcionalidades que deveriam estar protegidas. É uma das fragilidades mais comuns em segurança: o código não verifica corretamente quem está pedindo acesso e simplesmente concede.

Exemplo

Um e-commerce que permite acessar o perfil de qualquer cliente substituindo o ID na URL (ex: /usuario/123 → /usuario/124), sem validar se o usuário autenticado é o dono daquele perfil. Um atacante consegue ver dados pessoais, histórico de compras e endereços de outras pessoas.

Como mitigar

Implemente verificações explícitas em cada acesso a recurso: autentique o usuário, identifique qual recurso ele quer acessar, e valide se as permissões dele cobrem aquele recurso específico. Use listas de controle de acesso (ACLs) ou papéis (RBAC/ABAC) consistentemente em toda a API ou aplicação, nunca deixando a segurança implícita.

CVE-2021-22941CRITICALImproper Access Control in Citrix ShareFile storage zones controller before 5.11.20 may allow an unauthenticated attacker to remotely comproEPSS 53.6%KEVCVE-2017-5254—In version 3.5 and prior of Cambium Networks ePMP firmware, the non-administrative users 'installer' and 'home' have the capability of changEPSS 52.4%CVE-2023-4169MEDIUMRuijie RG-EW1200G Administrator Password set_passwd access controlEPSS 49.2%CVE-2012-6435HIGHRockwell Automation ControlLogix PLC Improper Access ControlEPSS 42.8%CVE-2024-21644HIGHpyLoad unauthenticated flask configuration leakageEPSS 42.4%CVE-2022-23513MEDIUMPi-Hole/AdminLTE vulnerable due to improper access control in queryads endpointEPSS 42.3%CVE-2025-31486MEDIUMVite allows server.fs.deny to be bypassed with .svg or relative pathsEPSS 40.5%CVE-2024-39943CRITICALrejetto HFS (aka HTTP File Server) 3 before 0.52.10 on Linux, UNIX, and macOS allows OS command execution by remote authenticated users (if EPSS 39.5%CVE-2012-6442HIGHRockwell Automation ControlLogix PLC Improper Access ControlEPSS 35.3%CVE-2024-24824HIGHgraylog2-server vulnerable to instantiation of arbitrary classes triggered by API requestEPSS 34.7%CVE-2024-55963MEDIUMAn issue was discovered in Appsmith before 1.51. A user on Appsmith that doesn't have admin permissions can trigger the restart API on AppsmEPSS 32.9%CVE-2016-1000031CRITICALApache Commons FileUpload before 1.3.3 DiskFileItem File Manipulation Remote Code ExecutionEPSS 32.7%CVE-2024-10124CRITICALVayu Blocks – Gutenberg Blocks for WordPress & WooCommerce <= 1.1.1 - Missing Authorization to Unauthenticated Arbitrary Plugin Installation/ActivationEPSS 32.7%CVE-2021-24146—Modern Events Calendar Lite < 5.16.5 - Unauthenticated Events ExportEPSS 31.0%CVE-2023-22960HIGHLexmark products through 2023-01-10 have Improper Control of Interaction Frequency.EPSS 28.0%CVE-2021-4119MEDIUMImproper Access Control in bookstackapp/bookstackEPSS 26.9%CVE-2024-27497HIGHLinksys E2000 Ver.1.0.06 build 1 is vulnerable to authentication bypass via the position.js file.EPSS 26.7%CVE-2020-8196MEDIUMImproper access control in Citrix ADC and Citrix Gateway versions before 13.0-58.30, 12.1-57.18, 12.0-63.21, 11.1-64.14 and 10.5-70.18 and CEPSS 26.3%KEVCVE-2024-13106MEDIUMD-Link DIR-816 A2 IP QoS form2IPQoSTcAdd access controlEPSS 26.0%CVE-2024-25830CRITICALF-logic DataCube3 v1.0 is vulnerable to Incorrect Access Control due to an improper directory access restriction. An unauthenticated, remoteEPSS 24.0%