Falhas do tipo CWE-287

2.850 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-2020-15240HIGHRegression in JWT Signature ValidationEPSS 0.8%CVE-2022-32514CRITICALA CWE-287: Improper Authentication vulnerability exists that could allow an attacker to gain control of the device when logging into a web pEPSS 0.8%CVE-2022-21692MEDIUMImproper Access Control in OnionshareEPSS 0.8%CVE-2026-84840MEDIUMtsi-coop tsi-dpdp-cms Bootstrap Setup Endpoint InterceptingFilter.java missing authenticationEPSS 0.8%CVE-2023-38372MEDIUMIBM Watson IoT Platform information disclosureEPSS 0.8%CVE-2022-23505MEDIUMPassport-wsfed-saml2 vulnerable to Authentication Bypass for WSFed authenticationEPSS 0.8%CVE-2021-32753HIGHWeak password in API gateway in EdgeX Foundry Edinburgh, Fuji, Geneva, and Hanoi releases allows remote attackers to obtain authentication token via dictionary-based password attack when OAuth2 authentication method is enabled.EPSS 0.8%CVE-2026-41574CRITICALNhost Vulnerable to Account Takeover via OAuth Email Verification BypassEPSS 0.8%CVE-2024-11186CRITICALOn affected versions of the CloudVision Portal, improper access controls could enable a malicious authenticated user to take broader actions on managed EOS devices than intended. This advisory impacts the Arista CloudVision Portal products when run on-premEPSS 0.8%CVE-2020-25183HIGHMedtronic MyCareLink Smart Improper AuthenticationEPSS 0.8%CVE-2026-63456CRITICALAuthentication bypass via spoofed HTTP headers Orchestrator REST APIEPSS 0.8%CVE-2024-3263CRITICALImproper authentication in YMS VIS ProEPSS 0.8%CVE-2023-46249CRITICALauthentik potential installation takeover when default admin user is deletedEPSS 0.8%CVE-2023-43805HIGHNexkey allows users to bypass authentication of Bull dashboardEPSS 0.8%CVE-2026-12795MEDIUMBerriAI litellm SSO Debug Flow ui_sso.py json.dumps missing authenticationEPSS 0.8%CVE-2023-39196MEDIUMApache Ozone: Missing mutual TLS authentication in one of the service internal Ozone Storage Container Manager endpointsEPSS 0.8%CVE-2020-14380—An account takeover flaw was found in Red Hat Satellite 6.7.2 onward. A potential attacker with proper authentication to the relevant externEPSS 0.8%CVE-2025-15099MEDIUMsimstudioai sim CRON Secret internal.ts improper authenticationEPSS 0.8%CVE-2025-3268MEDIUMqinguoyi TinyWebServer http_conn.cpp improper authenticationEPSS 0.8%CVE-2023-24093CRITICALAn access control issue in H3C A210-G A210-GV100R005 allows attackers to authenticate without a password.EPSS 0.8%