Weaknesses of type CWE-284

7,074 results

Controle de acesso inadequado a recursos

A aplicação falha em validar ou impõe regras insuficientes para determinar quem pode acessar um recurso (arquivo, API, dados, funcionalidade). Um usuário não autorizado consegue contornar essas restrições e acessar o que não deveria, seja por falta de autenticação, autorização fraca ou lógica de controle de acesso bugada.

Example

Um sistema de gestão de RH permite que qualquer funcionário logado acesse `/api/salarios/{id}` substituindo o ID na URL. Sem verificar se o usuário é gestor ou RH, a API retorna dados salariais de qualquer pessoa da empresa. Um dev junior consegue ver quanto ganha o CTO.

How to mitigate

Implemente verificação explícita de permissões antes de qualquer acesso: confirme autenticação (quem é), autorização (o que pode fazer) e aplique o princípio do menor privilégio. Use listas de controle de acesso (ACL), roles bem definidos e sempre valide no backend, nunca confie em dados do cliente.

CVE-2017-15891—Improper access control vulnerability in SYNO.Cal.EventBase in Synology Calendar before 2.0.1-0242 allows remote authenticated users to modiEPSS 1.0%CVE-2020-8121—A bug in Nextcloud Server 14.0.4 could expose more data in reshared link shares than intended by the sharer.EPSS 1.0%CVE-2024-20926MEDIUMVulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: ScriptiEPSS 1.0%CVE-2020-8182—Improper access control in Nextcloud Deck 0.8.0 allowed an attacker to reshare boards shared with them with more permissions than they had tEPSS 1.0%CVE-2026-33062HIGHfree5GC NRF Discovery EncodeGroupId Function Panics on Malformed group-id-list ParameterEPSS 1.0%CVE-2022-22183HIGHJunos OS Evolved: A remote attacker may cause a CPU Denial of Service by sending genuine traffic to a device on a specific IPv4 port.EPSS 1.0%CVE-2019-6193HIGHAn information disclosure vulnerability was reported in Lenovo XClarity Administrator (LXCA) versions prior to 2.6.6 that could allow unauthEPSS 1.0%CVE-2020-2504MEDIUMAbsolute path traversal vulnerability in QESEPSS 1.0%CVE-2024-38220CRITICALAzure Stack Hub Elevation of Privilege VulnerabilityEPSS 1.0%CVE-2019-11892HIGHImproper access control in the JSON-RPC interface of the Bosch Smart Home Controller (SHC)EPSS 1.0%CVE-2019-10138HIGHA flaw was discovered in the python-novajoin plugin, all versions up to, excluding 1.1.1, for Red Hat OpenStack Platform. The novajoin API lEPSS 1.0%CVE-2025-44654CRITICALIn Linksys E2500 3.0.04.002, the chroot_local_user option is enabled in the vsftpd configuration file. This could lead to unauthorized accesEPSS 1.0%CVE-2023-2183MEDIUMGrafana is an open-source platform for monitoring and observability. The option to send a test alert is not available from the user panel EPSS 1.0%CVE-2025-24241CRITICALA configuration issue was addressed with additional restrictions. This issue is fixed in macOS Sequoia 15.4, macOS Sonoma 14.7.5, macOS VentEPSS 1.0%CVE-2017-8438—Elastic X-Pack Security versions 5.0.0 to 5.4.0 contain a privilege escalation bug in the run_as functionality. This bug prevents transitionEPSS 1.0%CVE-2024-24386HIGHAn issue in VitalPBX v.3.2.4-5 allows an attacker to execute arbitrary code via a crafted payload to the /var/lib/vitalpbx/scripts folder.EPSS 1.0%CVE-2022-23730—The public API error causes for the attacker to be able to bypass API access control.EPSS 1.0%CVE-2023-39962HIGHUsers can delete external storage mount pointsEPSS 1.0%CVE-2021-21965HIGHA denial of service vulnerability exists in the SeaMax remote configuration functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34.EPSS 1.0%CVE-2022-32789MEDIUMA logic issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.5. An app may be able to bypass Privacy preferencEPSS 1.0%