Falhas do tipo CWE-290

721 resultados

Autenticação vulnerável a falsificação de identidade

Ocorre quando o sistema implementa mecanismos de autenticação de forma incorreta, permitindo que um atacante se passe por outro usuário sem fornecer credenciais válidas. A falha geralmente está em lógica fraca de validação de identidade, como confiar em dados facilmente manipuláveis (headers HTTP, cookies não assinados) ou em esquemas de autenticação incompletos que não verificam adequadamente quem está fazendo a requisição.

Exemplo

Um aplicativo web que valida login apenas verificando se existe um cookie com o nome 'user_id=123', sem assinatura criptográfica. Um atacante pode simplesmente adicionar esse cookie em sua requisição e o sistema o autenticará como o usuário 123. Outro caso comum: APIs que usam IP de origem como forma de autenticação, facilmente spoofada.

Como mitigar

Implemente autenticação robusta baseada em padrões estabelecidos (OAuth 2.0, JWT com assinatura, sessões server-side com tokens opacos). Valide identidade em cada requisição através de mecanismos criptográficos. Nunca confie unicamente em dados do cliente (headers customizados, cookies não assinados) como prova de identidade; sempre verifique contra estado confiável no servidor.

CVE-2026-93538HIGHCross-tenant BundleDeployment and Secret disclosure via spoofed cluster labels during agent-initiated registration in FleetEPSS 0.2%CVE-2026-88819MEDIUMIn Siglet current and past versions the refresh token handler do not enforce proof of possession of the issuer DID.EPSS 0.2%CVE-2025-13634MEDIUMInappropriate implementation in Downloads in Google Chrome on Windows prior to 143.0.7499.41 allowed a local attacker to bypass mark of the EPSS 0.2%CVE-2025-54305HIGHAn issue was discovered in the Thermo Fisher Torrent Suite Django application 5.18.1. One of the middlewares included in this application, LEPSS 0.2%CVE-2026-112493HIGHA downgrade issue was addressed with additional version checks. This issue is fixed in macOS Golden Gate 27.2, macOS Sequoia 15.8.2, macOS TEPSS 0.2%CVE-2026-112444MEDIUMThis issue was addressed with improved checks. This issue is fixed in macOS Golden Gate 27.2, macOS Tahoe 26.7.2. An app may be able to bypaEPSS 0.2%CVE-2023-7169MEDIUMImpersonate vendor signed Powershell scriptsEPSS 0.2%CVE-2026-31813MEDIUMSupabase Auth has insecure Apple and Azure authentication with ID tokensEPSS 0.2%CVE-2026-75037HIGHPolkit authentication bypass in LACTEPSS 0.2%CVE-2026-112494MEDIUMA file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Golden Gate 27.2, macOS Tahoe 26.7.2. An app mayEPSS 0.2%CVE-2026-28849MEDIUMThe issue was addressed with improved checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.5. A maliciouEPSS 0.2%CVE-2026-28900MEDIUMA file quarantine bypass was addressed with additional checks. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS TahoeEPSS 0.2%CVE-2025-37147HIGHSecure Boot Bypass allows for Compromise of Hardware Root of TrustEPSS 0.2%CVE-2026-33246MEDIUMNATS: Leafnode connections allow spoofing of Nats-Request-Info identity headersEPSS 0.1%CVE-2026-59916HIGHDell Display and Peripheral Manager (DDPM Windows), versions prior to 2.3.0.17, contain Improper Access Control vulnerability. A low privileEPSS 0.1%CVE-2026-84790HIGHOpenVPN 2.7_alpha1 through 2.7.7 allows remote authenticated users to impersonate others via a crafted certificate subject fieldEPSS 0.1%CVE-2026-61217MEDIUMVulnerability in the Oracle Security Service product of Oracle Fusion Middleware (component: Oracle SSL API). The supported version that iEPSS 0.1%CVE-2026-47123HIGHFreeScout: Agent Impersonation via Missing HMAC Verification on Notification Reply Message-ID PathEPSS 0.1%CVE-2026-63115MEDIUMActivityPub Undo handler can unfollow or remove reposts on behalf of other accountsEPSS 0.1%CVE-2025-27389MEDIUMApplication Installation Source Verification Flaw May Lead to Risk Detection BypassEPSS 0.1%