Falhas do tipo CWE-284

7.123 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-2026-28855HIGHA permissions issue was addressed with additional restrictions. This issue is fixed in iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3. An app maEPSS 0.4%CVE-2025-62720HIGHLinkAce: Data Exfiltration via Export Functions Allow Access to All Users' Private LinksEPSS 0.4%CVE-2025-13785MEDIUMyungifez Skuul School Management System Image profile information disclosureEPSS 0.4%CVE-2025-8738MEDIUMzlt2000 microservices-platform Spring Actuator Interface actuator information disclosureEPSS 0.4%CVE-2026-54761MEDIUMTraefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik servicesEPSS 0.4%CVE-2019-15615—A wrong check for the system time in the Android App 3.9.0 causes a bypass of the lock protection when changing the time of the system to thEPSS 0.4%CVE-2026-35162MEDIUMDell PowerFlex Manager, version(s) prior to 5.1.0.1, contain(s) an Improper Access Control vulnerability. A low privileged attacker with remEPSS 0.4%CVE-2026-83088HIGHVulnerability in the RDBMS component of Oracle Database Server. Supported versions that are affected are 23.4.0-23.26.3. Easily exploitableEPSS 0.4%CVE-2024-34404MEDIUMA vulnerability was discovered in the Alta Recovery Vault feature of Veritas NetBackup before 10.4 and NetBackup Appliance before 5.4. By deEPSS 0.4%CVE-2024-46916HIGHDiebold Nixdorf Vynamic Security Suite through 4.3.0 SR06 contains functionality that allows the removal of critical system files before theEPSS 0.4%CVE-2024-45982HIGHA host header injection vulnerability in scheduleR v0.0.18 allows attackers to obtain the password reset token via user interaction with a cEPSS 0.4%CVE-2026-20883MEDIUMGitea Stopwatch API Missing Authorization Check Leads to Post-Revocation Information DisclosureEPSS 0.4%CVE-2026-29872HIGHA cross-session information disclosure vulnerability exists in the awesome-llm-apps project in commit e46690f99c3f08be80a9877fab52acacf7ab82EPSS 0.4%CVE-2026-42863HIGHFlowise: Mass Assignment in Chatflow Update Endpoint Allows Cross-Workspace AgentFlow ReassignmentEPSS 0.4%CVE-2023-6810MEDIUMClickCease Click Fraud Protection <= 3.2.4 - Improper Authorization to sensitive information exposure via get_settingsEPSS 0.4%CVE-2021-1515MEDIUMCisco SD-WAN vManage Information Disclosure VulnerabilityEPSS 0.4%CVE-2026-5107LOWFRRouting FRR EVPN Type-2 Route bgp_evpn.c process_type2_route access controlEPSS 0.4%CVE-2021-25440—Improper access control vulnerability in FactoryCameraFB prior to version 3.4.74 allows untrusted applications to access arbitrary files witEPSS 0.4%CVE-2026-46441HIGHFlowise: Mass Assignment in Assistant Update Endpoint Allows Cross-Workspace Resource ReassignmentEPSS 0.4%CVE-2026-42861HIGHFlowise: Mass Assignment in Variable Update Endpoint Allows Cross-Workspace Resource ReassignmentEPSS 0.4%