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-2026-12526HIGHAdvanced Custom Fields: Extended < 0.9.2.7 - Unauthenticated Administrator Account Takeover via Front-End User Update ActionEPSS 0.4%CVE-2024-30939MEDIUMAn issue discovered in Yealink VP59 Teams Editions with firmware version 91.15.0.118 allows a physically proximate attacker to gain control EPSS 0.4%CVE-2022-29083MEDIUMPrior Dell BIOS versions contain an Improper Authentication vulnerability. An unauthenticated attacker with physical access to the system coEPSS 0.4%CVE-2024-45051HIGHBypass of email address validation via encoded email addresses in DiscourseEPSS 0.4%CVE-2024-2244MEDIUMREST service authentication anomaly with “valid username/no password” credential combination for batch job processing resulting in successfuEPSS 0.4%CVE-2026-111895HIGHphpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta Account Takeover via Entra ID preferred_usernameEPSS 0.4%CVE-2022-25667HIGHInformation disclosure in kernel due to improper handling of ICMP requests in Snapdragon Wired Infrastructure and NetworkingEPSS 0.4%CVE-2026-48114CRITICALMetacat has an unauthenticated SQL injection vulnerabilityEPSS 0.4%CVE-2025-31122CRITICALscratch-coding-hut.github.io Login Links Generation vulnerabilityEPSS 0.4%CVE-2026-46355HIGHBigBlueButton: Unauthenticated Session Hijack via Exposed /bigbluebutton/api/handleJoinExistingUserEPSS 0.4%CVE-2026-107350HIGHAuthentication bypass via second StartupMessage during SCRAM authentication in PgBouncerEPSS 0.4%CVE-2026-4592MEDIUMkalcaddle kodbox Password Login index.class.php tfaVerify improper authenticationEPSS 0.4%CVE-2026-50623MEDIUMApache CXF: Authentication Bypass in OAuth2 TokenIntrospectionServiceEPSS 0.4%CVE-2025-46607MEDIUMDell PowerProtect Data Domain with Data Domain Operating System (DD OS) of Feature Release versions 8.4 through 8.5 contain an improper authEPSS 0.4%CVE-2026-58253HIGHNATS Server: Route API Auth BypassEPSS 0.4%CVE-2026-92885CRITICALQode Membership <= 2.0.6.2 - Authentication Bypass via Social LoginEPSS 0.4%CVE-2025-31478HIGHZulip Authentication Backend Configuration BypassEPSS 0.4%CVE-2025-67507HIGHFilament's multi-factor authentication (app) recovery codes can be used multiple timesEPSS 0.4%CVE-2026-41571CRITICALNote Mark: OIDC-registered users authenticated by submitting password "null"EPSS 0.4%CVE-2026-48896HIGHJoomla! Core - [20260511] - MFA Authentication BypassEPSS 0.4%