Falhas do tipo CWE-444

365 resultados

Interpretação inconsistente de requisições HTTP (HTTP Request Smuggling)

Ocorre quando um proxy, load balancer ou firewall interpreta uma requisição HTTP de forma diferente do servidor backend. Um atacante envia uma requisição ambígua que a camada intermediária processa como um pedido, mas o servidor entende como dois pedidos distintos — permitindo contornar controles de segurança, injetar requisições maliciosas ou sequestrar sessões de outros usuários.

Exemplo

Um proxy usa Content-Length para delimitar o corpo da requisição, enquanto o servidor backend prioriza Transfer-Encoding: chunked. O atacante envia um payload onde a primeira requisição termina segundo o proxy, mas o servidor vê uma segunda requisição oculta no corpo — essa segunda requisição pode roubar dados de sessão de outros usuários ou contornar WAF.

Como mitigar

Desabilite Transfer-Encoding: chunked em proxies se possível, normalize e valide rigorosamente headers HTTP (Content-Length e Transfer-Encoding não devem coexistir), mantenha proxy e servidor backend sincronizados em versão e configuração, e teste parsing ambíguo com ferramentas como http-request-smuggler.

CVE-2026-73257CRITICALMongoose: Content-Length + Transfer-Encoding coexistence enables request smugglingEPSS 0.7%CVE-2024-53868HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.7%CVE-2026-2833CRITICALHTTP Request Smuggling via Premature UpgradeEPSS 0.7%CVE-2024-9622MEDIUMResteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4EPSS 0.6%CVE-2026-58153MEDIUMApache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafelyEPSS 0.6%CVE-2025-61258HIGHOutsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the boEPSS 0.6%CVE-2026-42581MEDIUMNetty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling SanitizationEPSS 0.6%CVE-2026-67182MEDIUMRouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header InjectionEPSS 0.6%CVE-2026-73494HIGHblaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parserEPSS 0.6%CVE-2026-23527HIGHh3 v1 has Request Smuggling (TE.TE) issueEPSS 0.6%CVE-2026-39805MEDIUMCL.CL HTTP request smuggling via duplicate Content-Length in banditEPSS 0.6%CVE-2026-13762HIGHHTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAFEPSS 0.6%CVE-2024-56908MEDIUMIn Perfex Crm < 3.2.1, an authenticated attacker can send a crafted HTTP POST request to the affected upload_sales_file endpoint. By providiEPSS 0.6%CVE-2024-38494HIGHSymantec Privileged Access Manager Remote Command Execution vulnerabilityEPSS 0.6%CVE-2026-57834HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.6%CVE-2026-114216MEDIUMChunk extensions accept bare LF and CR, enabling request smuggling in BanditEPSS 0.6%CVE-2024-56523CRITICALRadware Cloud Web Application Firewall (WAF) before 2025-05-07 allows remote attackers to bypass firewall filters by placing random data in EPSS 0.6%CVE-2020-5218MEDIUMAbility in Sylius to switch channels via GET parameter enabled in production environmentsEPSS 0.6%CVE-2026-74848HIGHApache APISIX: Cross-user response poisoning in serverless pluginsEPSS 0.6%CVE-2025-43859CRITICALh11 accepts some malformed Chunked-Encoding bodiesEPSS 0.6%