Falhas do tipo CWE-346

698 resultados

Validação inadequada de origem (CORS/mesma origem)

A aplicação falha em validar corretamente a origem (domain/protocolo/porta) das requisições, permitindo que código malicioso de outros domínios acesse recursos protegidos. Isso quebra a política de mesma origem do navegador e pode expor dados sensíveis ou permitir ações não autorizadas.

Exemplo

Um servidor aceita qualquer valor no header Origin sem validação, ou valida de forma fraca (ex: substring matching). Um atacante hospeda um site malicioso que, ao ser visitado, faz requisições CORS para a aplicação vulnerável e consegue ler dados da vítima autenticada.

Como mitigar

Implemente validação rigorosa de origem: compare o header Origin contra uma whitelist explícita de domínios confiáveis (nunca use wildcards), valide protocolo e porta também, e desative CORS se não for necessário. Use credenciais com cautela em requisições cross-origin (credenciais + Access-Control-Allow-Origin: * é inseguro).

CVE-2024-8183HIGHCORS Misconfiguration in prefecthq/prefectEPSS 0.2%CVE-2026-17826LOWInappropriate implementation in Chrome for iOS in Google Chrome on iOS prior to 151.0.7922.72 allowed a remote attacker who convinced a userEPSS 0.2%CVE-2025-59957HIGHJunos OS: EX4600 Series and QFX5000 Series: An attacker with physical access can open a persistent backdoorEPSS 0.2%CVE-2026-18000LOWInsufficient policy enforcement in USB in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker who had compromised the EPSS 0.2%CVE-2026-17720LOWInsufficient policy enforcement in Passwords in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the rendeEPSS 0.2%CVE-2026-17997LOWInappropriate implementation in Passwords in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the rendererEPSS 0.2%CVE-2026-17957LOWInappropriate implementation in CORS in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer procEPSS 0.2%CVE-2026-17715LOWInappropriate implementation in Passwords in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who convinced a user to engage iEPSS 0.2%CVE-2026-119331HIGHLadybird: Missing origin-clean enforcement in CSSStyleSheet allows cross-origin CSS read and mutationEPSS 0.2%CVE-2026-11194MEDIUMInappropriate implementation in Network in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crEPSS 0.2%CVE-2026-81102LOWDropbox Dash MCP Server DNS Rebinding via Missing Host Header ValidationEPSS 0.2%CVE-2026-6662MEDIUMericc-ch copilot-api Token Endpoint server.ts cors cross-domain policyEPSS 0.2%CVE-2026-84140CRITICALSite isolation issue in the DOM: Navigation componentEPSS 0.2%CVE-2026-109772CRITICALSame-origin policy bypass in the DevTools componentEPSS 0.2%CVE-2026-63183MEDIUMOmniAuth: Host Header Injection VulnerabilityEPSS 0.2%CVE-2026-61546HIGHAnkiMCP: DNS rebinding reaches unauthenticated local AnkiMCP HTTP toolsEPSS 0.2%CVE-2026-23792MEDIUMAn issue was discovered in NR RRC in Samsung Mobile Processor and Modem Exynos 1080, 2100, 1280, 2200, 1330, 1380, 1480, 2400, 1580, 2500, WEPSS 0.2%CVE-2026-55487HIGHpnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycleEPSS 0.2%CVE-2026-13822MEDIUMInappropriate implementation in Extensions in Google Chrome on Android prior to 150.0.7871.47 allowed an attacker who convinced a user to inEPSS 0.2%CVE-2025-25306CRITICALMisskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated NotesEPSS 0.2%