Fallos del tipo CWE-287

2853 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-2025-27086HIGHA vulnerability in the HPE Performance Cluster Manager (HPCM) GUI could allow an attacker to bypass authentication.EPSS 0.4%CVE-2022-48294HIGHThe IHwAttestationService interface has a defect in authentication. Successful exploitation of this vulnerability may affect data confidentiEPSS 0.4%CVE-2026-42560CRITICALauth: Patreon provider assigns the same local user ID to every authenticated Patreon account, enabling cross‑user impersonationEPSS 0.4%CVE-2026-19971MEDIUMLB-Link WR1210M Backup Endpoint backup.cgi main missing authenticationEPSS 0.4%CVE-2026-7679MEDIUMYunaiV yudao-cloud OAuth2TokenServiceImpl.java getAccessToken improper authenticationEPSS 0.4%CVE-2020-8097HIGHImproper authentication vulnerability in Bitdefender Endpoint Security Tools and Endpoint Security SDK (VA-8646)EPSS 0.4%CVE-2026-5616MEDIUMJeecgBoot AI Chat JeecgBizToolsProvider.java missing authenticationEPSS 0.4%CVE-2026-12877CRITICALSoftware Issue Manager < 5.1.0 - Unauthenticated SQL Injection via Search ParameterEPSS 0.4%CVE-2026-93984MEDIUMOpenPanel API through 2.3.0 Authentication Bypass via Unverified Client SecretEPSS 0.4%CVE-2025-30214HIGHFrappe vulnerable to information disclosure leading to account takeoverEPSS 0.4%CVE-2026-60327HIGHVulnerability in the Oracle Access Manager product of Oracle Fusion Middleware (component: Authentication Engine). Supported versions that EPSS 0.4%CVE-2026-57134HIGHPraisonAI MCPSecurity Basic/OAuth authentication policies accept invalid credentials without validationEPSS 0.4%CVE-2026-6569MEDIUMkodcloud KodExplorer fileGet Endpoint share.class.php improper authenticationEPSS 0.4%CVE-2026-11345MEDIUMImproper Authentication Bypass in linqi CDN File AccessEPSS 0.4%CVE-2026-107808HIGHNginx UI: Authentication bypass: password login does not enforce a passkey-only second factor (2FA bypass)EPSS 0.4%CVE-2026-6126MEDIUMzhayujie chatgpt-on-wechat CowAgent Administrative HTTP Endpoint missing authenticationEPSS 0.4%CVE-2026-59358HIGHUAA OAuth Token Endpoint Vulnerability allows user access token reuse for client_credentials grant typeEPSS 0.4%CVE-2026-92855HIGHKeycloak-services: keycloak-services: saml broker accepts holder-of-key assertions without proof of key possessionEPSS 0.4%CVE-2026-44961NONEThe XML‑RPC API addUser method has a validation bypass introduced in the fix for CVE‑2025‑55129. As a result, API users could create usernamEPSS 0.4%CVE-2026-45156HIGHNextcloud: Authentication Bypass in ID4me handling via Missing JWT Signature Verification in User OIDCEPSS 0.4%