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-2026-56294MEDIUMcapacitor-native-biometric - Authentication Bypass via Unvalidated CryptoObject in onAuthenticationSucceededEPSS 0.2%CVE-2026-44711HIGHpam_usb: Symlink attacks on pad directory and pad files enable authentication bypass and root file corruptionEPSS 0.2%CVE-2026-79875CRITICALAuthentication Bypass in the PAPI Protocol of AOS-8 Allows Unauthorized Administrative AccessEPSS 0.2%CVE-2026-49194CRITICALSCREEN_CLICK Authentication BypassEPSS 0.2%CVE-2026-118201HIGHLimit Login Attempts Reloaded 3.0.0 - 3.4.0 - Two-Factor Authentication Bypass via XML-RPCEPSS 0.2%CVE-2026-103331MEDIUMUniPAY Payment Gateway For WooCommerce < 2.4 - Unauthenticated Order Payment Forgery via Empty IPN SecretEPSS 0.2%CVE-2026-126129—The Auth0 ASP.NET Core Authentication SDK incorrectly determines a session's OIDC Back-Channel Logout status, which may result in a logged-oEPSS 0.2%CVE-2025-27425MEDIUMQR code user confirmation bypass with invalid protocolEPSS 0.2%CVE-2026-123091HIGHVigilant < 2.11.0 - 2FA Bypass via Third-Party Login FormsEPSS 0.2%CVE-2026-105305MEDIUMKeycloak-services: keycloak-services: device authorization grant bypasses per-client minimum.acr.value enforcementEPSS 0.2%CVE-2022-22284MEDIUMImproper authentication vulnerability in Samsung Internet prior to 16.0.2.19 allows attackers to bypass secret mode password authenticationEPSS 0.2%CVE-2020-36548MEDIUMGE Voluson S8 Service Browser users.cgi improper authenticationEPSS 0.2%CVE-2026-115996MEDIUMUnitree Robotics Unitree Go2 chat_go websocket.py WebSocketClient.connect certificate validationEPSS 0.2%CVE-2026-93489HIGHImproper Authentication in ASUS router modules allows an unauthenticated nearby user to send an HTTP request and forge an access ticket, subEPSS 0.2%CVE-2025-53013MEDIUMHimmelblau offline auth permits authentication with invalid Hello PINEPSS 0.2%CVE-2021-25451LOWA PendingIntent hijacking in NetworkPolicyManagerService prior to SMR Sep-2021 Release 1 allows attackers to get IMSI data.EPSS 0.2%CVE-2023-28646MEDIUMApp lockout in nextcloud Android app can be bypassed via thirdparty appsEPSS 0.2%CVE-2026-57175MEDIUMsocial-auth-core has an Improper Authentication issueEPSS 0.2%CVE-2026-32804HIGHDell PowerFlex Manager, version(s) prior to 5.1.0.1, contain(s) an Improper Authentication vulnerability. An unauthenticated attacker with aEPSS 0.2%CVE-2026-111250—Apache TomEE: Authentication bypass via programmatic authentication in embedded HTTP serverEPSS 0.2%