Fallos del tipo CWE-284

7967 resultados

Controle de acesso insuficiente ou ausente

A aplicação não valida corretamente quem pode acessar determinado recurso (arquivo, API, função, dados), permitindo que usuários não autorizados façam operações que deveriam estar bloqueadas. É um dos problemas mais comuns em segurança: sem autenticação e autorização robustas, qualquer um consegue fazer o que não deveria.

Ejemplo

Um admin panel acessível via /admin sem login real, ou uma API que retorna dados de qualquer usuário basta mudar um ID na URL sem verificar se você tem permissão. Outro caso: arquivo de configuração com credenciais exposto publicamente porque a aplicação não define permissões de leitura no servidor.

Cómo mitigar

Implemente autenticação forte (sessões, tokens JWT) e autorização em toda operação sensível — verifique explicitamente se o usuário logado tem permissão antes de retornar dados ou executar ações. Use listas de controle de acesso (ACL) ou Role-Based Access Control (RBAC), e nunca confie em IDs de usuário vindos do cliente sem validação server-side.

CVE-2024-26203HIGHAzure Data Studio Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2021-25956MEDIUMImproper User Access Control in "Dolibarr" Leads to Account TakeoverEPSS 0.9%CVE-2025-21588MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: DML). Supported versions that are affected are 8.4.0-8.4.4 anEPSS 0.9%CVE-2021-20050—An Improper Access Control Vulnerability in the SMA100 series leads to multiple restricted management APIs being accessible without a user lEPSS 0.9%CVE-2022-1753MEDIUMWoWonder Group requests.php access controlEPSS 0.9%CVE-2021-26338—Improper access controls in System Management Unit (SMU) may allow for an attacker to override performance control tables located in DRAM reEPSS 0.9%CVE-2025-30696MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: PS). Supported versions that are affected are 8.0.0-8.0.41, 8EPSS 0.9%CVE-2025-30699MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Stored Procedure). Supported versions that are affected are 8EPSS 0.9%CVE-2025-30689MEDIUMVulnerability in the MySQL Server product of Oracle MySQL (component: Server: Optimizer). Supported versions that are affected are 8.0.0-8.EPSS 0.9%CVE-2021-4026MEDIUMImproper Access Control in bookstackapp/bookstackEPSS 0.9%CVE-2023-38848—An issue in rmc R Beauty CLINIC Line v.13.6.1 allows a remote attacker to obtain sensitive information via crafted GET request.EPSS 0.9%CVE-2023-26471CRITICALXWiki Platform users may execute anything with superadmin right through comments and async macroEPSS 0.9%CVE-2023-41322MEDIUMPrivilege Escalation from technician to super-admin in GLPIEPSS 0.9%CVE-2023-3271HIGHImproper Access Control in the SICK ICR890-4 could allow an unauthenticated remote attacker to gather information about the system and downlEPSS 0.9%CVE-2022-45475MEDIUMTiny File Manager version 2.4.8 allows an unauthenticated remote attacker to access the application's internal files. This is possible becauEPSS 0.9%CVE-2025-1355MEDIUMneedyamin Library Card System Add Picture signup.php unrestricted uploadEPSS 0.9%CVE-2024-20918HIGHVulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: HotspotEPSS 0.9%CVE-2024-20952HIGHVulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: SecuritEPSS 0.9%CVE-2021-22920—A vulnerability has been discovered in Citrix ADC (formerly known as NetScaler ADC) and Citrix Gateway (formerly known as NetScaler Gateway)EPSS 0.9%CVE-2024-26201MEDIUMMicrosoft Intune Linux Agent Elevation of Privilege VulnerabilityEPSS 0.9%