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-2022-45139MEDIUMWAGO: Origin validation error through CORS misconfigurationEPSS 0.3%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 0.3%CVE-2026-37977LOWKeycloak: org.keycloak.protocol.oidc.grants.ciba: keycloak: information disclosure via cors header injection due to unvalidated jwt azp claimEPSS 0.3%CVE-2025-59159CRITICALSillyTavern Web Interface Vulnerable to DNS RebindingEPSS 0.3%CVE-2026-5283MEDIUMInappropriate implementation in ANGLE in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to leak cross-origin data via a craEPSS 0.3%CVE-2020-15104MEDIUMTLS Validation Vulnerability in EnvoyEPSS 0.3%CVE-2026-17732LOWInappropriate implementation in SVG in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafteEPSS 0.3%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 0.3%CVE-2026-27192HIGHFeathers has an origin validation bypass via prefix matchingEPSS 0.2%CVE-2025-7365HIGHKeycloak: phishing attack via email verification step in first login flowEPSS 0.2%CVE-2026-13887MEDIUMInappropriate implementation in NFC in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker who had compromised the renEPSS 0.2%CVE-2026-13793MEDIUMInsufficient policy enforcement in SVG in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a craEPSS 0.2%CVE-2026-13913MEDIUMInsufficient policy enforcement in Autofill in Google Chrome on iOS prior to 150.0.7871.47 allowed a remote attacker who convinced a user toEPSS 0.2%CVE-2026-13826MEDIUMInappropriate implementation in Autofill in Google Chrome on Android prior to 150.0.7871.47 allowed a remote attacker who had compromised thEPSS 0.2%CVE-2026-13840MEDIUMInsufficient policy enforcement in Canvas in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a EPSS 0.2%CVE-2025-8881MEDIUMInappropriate implementation in File Picker in Google Chrome prior to 139.0.7258.127 allowed a remote attacker who convinced a user to engagEPSS 0.2%CVE-2025-9180HIGHSame-origin policy bypass in the Graphics: Canvas2D componentEPSS 0.2%CVE-2025-5263MEDIUMError handling for script execution was incorrectly isolated from web contentEPSS 0.2%CVE-2026-34927HIGHAn origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileges on affected installations. EPSS 0.2%CVE-2026-34929HIGHAn origin validation vulnerability in the Apex One/SEP agent could allow a local attacker to escalate privileges on affected installations. EPSS 0.2%