Falhas do tipo CWE-287

2.855 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-2026-33512HIGHAVideo has an unauthenticated decrypt oracle leaking any ciphertextEPSS 0.2%CVE-2026-44166MEDIUMPocketbase: Account pre-hijacking via OAuth2 unverfied->verified autolinking upgradeEPSS 0.2%CVE-2026-0407MEDIUMAuthentication bypass in NETGEAR WiFi Range Extenders via network adjacent attacksEPSS 0.2%CVE-2020-12035—Baxter PrismaFlex all versions, PrisMax all versions prior to 3.x, The PrismaFlex device contains a hard-coded service password that provideEPSS 0.2%CVE-2026-96456MEDIUMReachy Mini Bluetooth PIN authentication can be bypassed by racing an authenticated deviceEPSS 0.2%CVE-2025-62398MEDIUMMoodle: possible to bypass mfaEPSS 0.2%CVE-2026-79873CRITICALUnauthenticated Adjacent Authentication Bypasses in the PAPI Protocol of AOS-10 Leads to Unauthorized Administrative AccessEPSS 0.2%CVE-2026-79874CRITICALAuthentication Bypass in the API allows Administrative Access of AOS-10EPSS 0.2%CVE-2026-56727HIGHZammad: PGP signature spoofing via unvalidated verification returnEPSS 0.2%CVE-2026-118202HIGHLimit Login Attempts Reloaded < 3.4.1 - Two-Factor Authentication Bypass via Malformed X-Forwarded-For HeaderEPSS 0.2%CVE-2026-22764MEDIUMDell OpenManage Network Integration, versions prior to 3.9, contains an Improper Authentication vulnerability. A low privileged attacker witEPSS 0.2%CVE-2026-45567HIGHRoxy-WI: Authentication bypass via 'api' substring in URL + unauthenticated /api/gptEPSS 0.2%CVE-2026-39322CRITICALPolarLearn: Any password authenticates banned accounts and grants API accessEPSS 0.2%CVE-2026-111955MEDIUMWholesaleX < 3.0.9 - Unauthenticated Account Activation and Administrator Approval BypassEPSS 0.2%CVE-2026-65329MEDIUMAn authentication issue was addressed with improved state management. This issue is fixed in iOS 26.6.1 and iPadOS 26.6.1, iOS 27 and iPadOSEPSS 0.2%CVE-2026-46437MEDIUMwger: API credentials remain valid after logout/password changeEPSS 0.2%CVE-2024-24554MEDIUMBludit - Insecure Token GenerationEPSS 0.2%CVE-2025-9265CRITICALAPI Authentication Bypass via Header Spoofing vulnerability in Kiloview NDI N30 ProductsEPSS 0.2%CVE-2025-15484CRITICALOrder Notification for WooCommerce < 3.6.3 - Unauthenticated WooCommerce REST Permission BypassEPSS 0.2%CVE-2021-3458MEDIUMThe Motorola MM1000 device configuration portal can be accessed without authentication, which could allow adapter settings to be modified.EPSS 0.2%