Falhas do tipo CWE-287

2.452 resultados

Autenticação Insuficiente ou Ausente

Quando um usuário ou sistema afirma ser quem diz que é, a aplicação não valida (ou valida mal) essa identidade antes de conceder acesso. Isso permite que um atacante se passe por outra pessoa sem fornecer credenciais válidas, obtendo privilégios indevidos.

Exemplo

Um sistema que aceita login apenas verificando um campo de e-mail na sessão (sem senha), ou uma API que confia em um identificador de usuário enviado no header HTTP sem validar um token assinado. Um atacante simplesmente muda o valor e acessa dados de terceiros.

Como mitigar

Implemente autenticação robusta: exija senha forte + MFA quando possível, valide tokens com assinatura criptográfica, revoque sessões expiradas, e nunca confie em dados controlados pelo cliente. Teste autenticação em cada endpoint crítico.

CVE-2024-21635HIGHMemos Access Tokens Stay Valid after User Password ChangeEPSS 0.3%CVE-2024-56445MEDIUMInstruction authentication bypass vulnerability in the Findnetwork module Impact: Successful exploitation of this vulnerability may cause feEPSS 0.3%CVE-2026-85056HIGHZITADEL: MFA bypass via session reuse in Login V2EPSS 0.3%CVE-2026-56666MEDIUMZITADEL: Auto-linking by email: IdP-side email verification is not checkedEPSS 0.3%CVE-2025-68402HIGHFreshRSS has an authentication bypass due to truncated bcrypt hash [edge branch]EPSS 0.3%CVE-2024-45036MEDIUMImproper Access Control Vulnerability When Accessing a Maliciously Crafted Tophat LinkEPSS 0.3%CVE-2026-18960MEDIUMBlock User Account < 2.0.1 - Subscriber+ Account Block Bypass via Application PasswordsEPSS 0.3%CVE-2026-23708MEDIUMA improper authentication vulnerability in Fortinet FortiSOAR PaaS 7.6.0 through 7.6.3, FortiSOAR PaaS 7.5.0 through 7.5.2, FortiSOAR on-preEPSS 0.3%CVE-2025-29773MEDIUMFroxlor allows Multiple Accounts to Share the Same Email Address Leading to Potential Privilege Escalation or Account TakeoverEPSS 0.3%CVE-2022-41579MEDIUMThere is an insufficient authentication vulnerability in some Huawei band products. Successful exploit could allow the attacker to spoof theEPSS 0.3%CVE-2026-4829MEDIUMImproper authentication in the external OAuth authentication flow in Devolutions Server 2026.1.11 and earlier allows an authenticated user tEPSS 0.3%CVE-2026-67335MEDIUMbetter-auth before 1.6.2 OAuth State Validation BypassEPSS 0.3%CVE-2026-18651MEDIUM389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-lock check, allowing continued access as a locked accountEPSS 0.3%CVE-2020-3151MEDIUMCisco Connected Mobile Experiences Restricted Shell Escape VulnerabilityEPSS 0.3%CVE-2026-24003MEDIUMEvseV2G has sequence state validation bypassEPSS 0.3%CVE-2024-27137MEDIUMApache Cassandra: unrestricted deserialization of JMX authentication credentialsEPSS 0.3%CVE-2026-49203HIGHUnauthenticated eSIM Configuration ManipulationEPSS 0.3%CVE-2026-33215MEDIUMNATS is vulnerable to MQTT hijacking via Client IDEPSS 0.3%CVE-2026-14214LOWAmelia < 2.4.4 - Amelia Manager+ Arbitrary User-Field Modification via Mass AssignmentEPSS 0.3%CVE-2026-40178MEDIUMajenti.plugin.core has a race conditions in 2FAEPSS 0.3%