Weaknesses of type CWE-602

185 results

Confiança inadequada em mecanismo de proteção implementado no cliente

O servidor delega para o cliente (navegador, app, dispositivo) a responsabilidade de implementar uma proteção que deveria ser garantida no servidor. Isso é perigoso porque o cliente está sob controle do atacante — qualquer validação, restrição ou lógica de segurança implementada apenas no lado do cliente pode ser contornada, alterada ou removida. O servidor fica vulnerável quando assume que o cliente vai cumprir as regras.

Example

Um e-commerce que valida limite de quantidade de compra apenas no JavaScript do frontend, ou um banco que confere crédito disponível apenas no navegador antes de enviar a transação. Um atacante modifica o código do cliente, remove a validação ou faz requisições diretas ao servidor, contornando a proteção completamente.

How to mitigate

Implemente toda validação, autenticação e autorização críticas no servidor. Nunca confie em mecanismos de segurança executados apenas no cliente. Use validação no cliente para UX, mas sempre revalide e reforce as regras no backend antes de qualquer operação sensível.

CVE-2022-3047MEDIUMInsufficient policy enforcement in Extensions API in Google Chrome prior to 105.0.5195.52 allowed an attacker who convinced a user to instalEPSS 0.6%CVE-2026-63301HIGHDenial of Service in Quick.CMSEPSS 0.6%CVE-2026-67363HIGHJoomla Extension - balbooa.com - Pre-auth Payment Amount Tampering in Balbooa Forms < 2.4.3.2EPSS 0.6%CVE-2024-12603CRITICALA logic vulnerability in the the mobile application (com.transsion.applock) can lead to bypassing the application password.EPSS 0.6%CVE-2020-27268—In SOOIL Developments Co., Ltd Diabecare RS, AnyDana-i and AnyDana-A, a client-side control vulnerability in the insulin pump and its AnyDanEPSS 0.5%CVE-2026-89175MEDIUMKingdom Communication Associated｜Smart Video Intercom System - Client-Side AuthenticationEPSS 0.5%CVE-2026-84841MEDIUMtsi-coop tsi-dpdp-cms client-side enforcement of server-side securityEPSS 0.5%CVE-2026-64813CRITICALIn JetBrains IntelliJ IDEA before 2026.2 unauthorized settings modification was possible in a Remote Development sessionEPSS 0.5%CVE-2025-6025HIGHOrder Tip for WooCommerce <= 1.5.4 - Unauthenticated Tip Manipulation to Negative Value Leading to Unauthorized DiscountsEPSS 0.5%CVE-2026-65051MEDIUMNinja Forms Server-Side Validation Bypass via Client-Controlled Field Metadata Merge in AJAX Submission HandlerEPSS 0.5%CVE-2026-84110MEDIUMReleasit Releasit COD Form & Upsells OTP Validation client-side enforcement of server-side securityEPSS 0.5%CVE-2023-48789MEDIUMA client-side enforcement of server-side security in Fortinet FortiPortal version 6.0.0 through 6.0.14 allows attacker to improper access coEPSS 0.5%CVE-2026-23478CRITICALCal.com has an Authentication Bypass via Unvalidated Email in Custom JWT CallbackEPSS 0.5%CVE-2025-66507HIGH1Panel – CAPTCHA Bypass via Client-Controlled FlagEPSS 0.5%CVE-2026-89293HIGHMissing server-side authorization in Eclipse Mnestix Browser admin server actions allows unauthenticated configuration tamperingEPSS 0.5%CVE-2026-77026MEDIUMJoomla Extension - tassos.gr - Client-controlled validation bypass in Convert Forms extension 1.0.0-4.4.16, 5.0.0-5.2.5EPSS 0.5%CVE-2023-0750CRITICALYellowbrik PEC-1864 authentication bypassEPSS 0.4%CVE-2026-13901CRITICALInsufficient policy enforcement in Serial in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the rendererEPSS 0.4%CVE-2026-119746HIGHProSoft ICX35 Login Lockout Bypass via Client-Side CookiesEPSS 0.4%CVE-2025-42601HIGHCaptcha Bypass Vulnerability in Meon KYC solutionsEPSS 0.4%