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-2026-34908CRITICALA malicious actor with access to the network could exploit an Improper Access Control vulnerability found in UniFi OS devices to make unauthEPSS 88.9%KEVCVE-2014-3120HIGHThe default configuration in Elasticsearch before 1.2 enables dynamic scripting, which allows remote attackers to execute arbitrary MVEL expEPSS 88.6%KEVCVE-2020-8193MEDIUMImproper 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 88.3%KEVCVE-2026-48907CRITICALJoomla Extension - joomlacontenteditor.net - Remote Code Execution in JCE extension for Joomla < 2.9.99.5EPSS 85.4%KEVCVE-2013-2423LOWUnspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 Update 17 and earlier, and OpenJDK 7, allows rEPSS 85.2%KEVCVE-2023-22232MEDIUMAdobe Connect Improper Access Control Security feature bypassEPSS 83.4%CVE-2025-33073HIGHWindows SMB Client Elevation of Privilege VulnerabilityEPSS 82.8%KEVCVE-2019-1619CRITICALCisco Data Center Network Manager Authentication Bypass VulnerabilityEPSS 82.8%CVE-2021-20034—An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete aEPSS 81.8%CVE-2022-31704CRITICALThe vRealize Log Insight contains a broken access control vulnerability. An unauthenticated malicious actor can remotely inject code into seEPSS 81.0%CVE-2021-21425CRITICALUnauthenticated Arbitrary YAML Write/Update leads to Code ExecutionEPSS 80.5%CVE-2025-4901MEDIUMD-Link DI-7003GV2 HTTP Endpoint state_view.data sub_41E304 information disclosureEPSS 78.9%CVE-2019-1622MEDIUMCisco Data Center Network Manager Information Disclosure VulnerabilityEPSS 78.9%CVE-2025-31125MEDIUMVite has a `server.fs.deny` bypassed for `inline` and `raw` with `?import` queryEPSS 74.9%KEVCVE-2025-30208MEDIUMVite bypasses server.fs.deny when using `?raw??`EPSS 74.8%CVE-2026-21962CRITICALVulnerability in the Oracle HTTP Server, Oracle Weblogic Server Proxy Plug-in product of Oracle Fusion Middleware (component: Weblogic ServeEPSS 73.2%KEVCVE-2024-25723HIGHZenML Server in the ZenML machine learning package before 0.46.7 for Python allows remote privilege escalation because the /api/v1/users/{usEPSS 70.8%CVE-2024-20931HIGHVulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected areEPSS 59.7%CVE-2026-2699CRITICALEAR vulnerability in Progress ShareFile Storage Zones Controller (SZC)EPSS 58.4%CVE-2023-21742HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 55.8%