Fallos del tipo CWE-287

2806 resultados

Autenticação inadequada ou ausente

A aplicação não valida ou valida de forma insuficiente a identidade de quem tenta acessá-la. Quando um usuário diz ser quem é, o sistema acredita sem verificar corretamente, permitindo que atacantes se façam passar por outros usuários ou contas legítimas.

Ejemplo

Um sistema que aceita login apenas com nome de usuário, sem senha. Ou uma API que confia no header 'User-ID' enviado pelo cliente sem validar se aquele usuário realmente existe ou tem sessão ativa. Um atacante simplesmente altera o header e acessa dados de outra conta.

Cómo mitigar

Implemente autenticação robusta: exija múltiplos fatores (senha forte + MFA), valide credenciais contra base de dados segura, use sessões com token assinado e com expiração, nunca confie em dados enviados pelo cliente como prova de identidade. Revise regularmente logs de acesso para detectar abusos.

CVE-2023-4501CRITICALAuthentication bypass in OpenText (Micro Focus) Enterprise ServerEPSS 0.8%CVE-2026-90513MEDIUMsimalexan api-lambda-send-email-ses API Gateway Endpoint template.yml SES.sendEmail missing authenticationEPSS 0.8%CVE-2024-12264CRITICALPayU CommercePro Plugin <= 3.8.3 - Unauthenticated Privilege EscalationEPSS 0.8%CVE-2023-21841HIGHVulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected areEPSS 0.8%CVE-2026-3053MEDIUMDataLinkDC dinky OpenAPI Endpoint AppConfig.java addInterceptors missing authenticationEPSS 0.8%CVE-2022-38180MEDIUMIn JetBrains Ktor before 2.1.0 the wrong authentication provider could be selected in some casesEPSS 0.8%CVE-2022-47508HIGHDisable NTLM: SAM 2022.4 EPSS 0.8%CVE-2026-121615CRITICALLinksys E5600 Login mesh_login.cgi improper authenticationEPSS 0.8%CVE-2021-25445—Unprotected component vulnerability in Samsung Internet prior to version 14.2 allows untrusted application to access internal files in SamsuEPSS 0.8%CVE-2023-32682MEDIUMImproper checks for deactivated users during login in synapseEPSS 0.8%CVE-2024-38139HIGHMicrosoft Dataverse Elevation of Privilege VulnerabilityEPSS 0.8%CVE-2026-40139CRITICALCritical Pre-Authentication Vulnerability in BeyondTrust Remote Support and Privileged Remote AccessEPSS 0.8%CVE-2021-25490MEDIUMA keyblob downgrade attack in keymaster prior to SMR Oct-2021 Release 1 allows attacker to trigger IV reuse vulnerability with privileged prEPSS 0.8%CVE-2023-3622MEDIUMAccess Control Bypass Vulnerability in the SolarWinds Platform EPSS 0.8%CVE-2026-85636MEDIUMjofpin trape Login Endpoint stats.py missing authenticationEPSS 0.8%CVE-2026-26035HIGHAn Improper Authentication vulnerability [CWE-287] vulnerability in Fortinet FortiWeb 8.0.0 through 8.0.2, FortiWeb 7.6.0 through 7.6.6, ForEPSS 0.8%CVE-2026-101956CRITICALJunos OS: Unauthorized root command execution when J-Web is enabledEPSS 0.8%CVE-2020-20402HIGHWestbrookadmin portfolioCMS v1.05 allows attackers to bypass password validation and access sensitive information via session fixation.EPSS 0.7%CVE-2026-88952CRITICALOAuth2 sign-in attached to an existing account without an email comparison in AshAuthenticationEPSS 0.7%CVE-2026-18961HIGHSocial Login, Passkeys, Magic Link & Email OTP – Passwordless Login by VentraConnect <= 1.4.3 - Unauthenticated Authentication Bypass via Spotify OAuth CallbackEPSS 0.7%