Fallos del tipo CWE-444

323 resultados

Interpretação inconsistente de requisições HTTP (HTTP Request Smuggling)

Ocorre quando proxies, load balancers ou firewalls interpretam requisições HTTP de forma diferente do servidor backend. Um atacante explora essa discrepância enviando requisições ambíguas (com headers conflitantes ou corpo malformado) que são parseadas de modos distintos por camadas diferentes da infraestrutura, permitindo contornar controles de segurança ou injetar requisições não autorizadas no backend.

Ejemplo

Um proxy usa Content-Length para determinar o fim da requisição, enquanto o servidor backend usa Transfer-Encoding: chunked. O atacante envia uma requisição que contém dois requests: um legítimo (que passa pelo proxy) e um malicioso embutido no corpo (que o backend processa como requisição separada). Resultado: bypass de WAF ou injeção de cache envenenado.

Cómo mitigar

Normalize o parsing: garanta que todas as camadas (proxy, load balancer, aplicação) usem as mesmas regras RFC 7230 para interpretar headers Content-Length e Transfer-Encoding; desabilite métodos ambíguos no proxy (reject requisições com ambos os headers); mantenha proxies e servidores sincronizados em versões e configurações de parsing HTTP.

CVE-2026-39805MEDIUMCL.CL HTTP request smuggling via duplicate Content-Length in banditEPSS 0.5%CVE-2026-93569HIGHIo.netty/netty-codec-http2: http/1 absolute-form host mismatch is translated to http/2 :authority, overriding the request-target authorityEPSS 0.5%CVE-2026-93574MEDIUMIo.netty/netty-codec-http: netty: http request smuggling via post-digit whitespace in chunk-size parsingEPSS 0.5%CVE-2025-23167MEDIUMA flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inEPSS 0.5%CVE-2026-71324HIGHTraefik: Cross-user response poisoning via proxied CONNECT on Traefik's shared backend keep-alive poolEPSS 0.5%CVE-2025-4366HIGHRequest Smuggling Vulnerability in PingoraEPSS 0.5%CVE-2026-69217HIGHHttp4s: Ember Server accepts duplicate Content-Length headersEPSS 0.5%CVE-2025-12874MEDIUMHTTP Request Smuggling in Quest Coexistence Manager for NotesEPSS 0.5%CVE-2026-1525MEDIUMundici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')EPSS 0.5%CVE-2024-20915MEDIUMVulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Login - SSO). Supported versions thatEPSS 0.5%CVE-2026-40560HIGHStarman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header PrecedenceEPSS 0.5%CVE-2024-49768CRITICALWaitress has request processing race condition in HTTP pipelining with invalid first requestEPSS 0.5%CVE-2026-73257CRITICALMongoose: Content-Length + Transfer-Encoding coexistence enables request smugglingEPSS 0.5%CVE-2023-49584MEDIUMClient-Side Desynchronization vulnerability in SAP Fiori LaunchpadEPSS 0.5%CVE-2023-51701MEDIUM@fastify-reply-from JSON Content-Type parsing confusionEPSS 0.5%CVE-2025-6442MEDIUMRuby WEBrick read_header HTTP Request Smuggling VulnerabilityEPSS 0.5%CVE-2026-11806HIGHIBM WebSphere Application Server Liberty is affected by a an arbitrary file read vulnerabilityEPSS 0.5%CVE-2023-52354HIGHchasquid before 1.13 allows SMTP smuggling because LF-terminated lines are accepted.EPSS 0.5%CVE-2026-28497CRITICALTinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)EPSS 0.5%CVE-2026-58153MEDIUMApache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafelyEPSS 0.5%