Falhas do tipo CWE-346

588 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-2026-35577MEDIUMMissing Host Header Validation in Apollo MCP Server for Localhost DeploymentsEPSS 0.2%CVE-2026-55487HIGHpnpm: manifest identity spoof satisfies allowBuilds and runs attacker lifecycleEPSS 0.2%CVE-2025-23109MEDIUMAddress bar spoofing on iOS using long hostnamesEPSS 0.2%CVE-2026-50025MEDIUMMousehole: Unauthenticated HTTP/WebSocket boundary exposes and mutates MAM cookie stateEPSS 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-2026-26861HIGHCleverTap Web SDK version 1.15.2 and earlier is vulnerable to Cross-Site Scripting (XSS) via window.postMessage. The handleCustomHtmlPreviewEPSS 0.2%CVE-2023-44189MEDIUMJunos OS Evolved: PTX10003 Series: MAC address validation bypass vulnerabilityEPSS 0.2%CVE-2024-8183HIGHCORS Misconfiguration in prefecthq/prefectEPSS 0.2%CVE-2026-56277MEDIUMFlowise - Hardcoded CORS Wildcard in TTS EndpointEPSS 0.2%CVE-2023-5973MEDIUMTruncated port nameEPSS 0.2%CVE-2023-27944HIGHThis issue was addressed with a new entitlement. This issue is fixed in macOS Ventura 13.3, macOS Monterey 12.6.4, macOS Big Sur 11.7.5. An EPSS 0.2%CVE-2026-11176MEDIUMInappropriate implementation in Media in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafEPSS 0.2%CVE-2026-92360MEDIUMag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validationEPSS 0.2%CVE-2026-18847HIGHIBM i is Affected By Multiple Vulnerabilities in Navigator for iEPSS 0.2%CVE-2026-11084MEDIUMInappropriate implementation in Password Manager in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin dataEPSS 0.2%CVE-2026-11200MEDIUMInappropriate implementation in WebRTC in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a craEPSS 0.2%CVE-2026-11032MEDIUMInappropriate implementation in Password Manager in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin dataEPSS 0.2%CVE-2025-25306CRITICALMisskey's Incomplete Patch of CVE-2024-52591 Leads to Forgery of Federated NotesEPSS 0.2%CVE-2026-11083MEDIUMInappropriate implementation in Password Manager in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin dataEPSS 0.2%CVE-2026-48022MEDIUM@hapi/wreck: Sensitive credential headers leak across cross-port and cross-scheme redirectsEPSS 0.2%