Fallos del tipo CWE-444

365 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-2025-0752HIGHEnvoyproxy: openshift service mesh envoy http header sanitization bypass leading to dos and unauthorized accessEPSS 0.4%CVE-2026-1801MEDIUMLibsoup: libsoup: http request smuggling via malformed chunk headersEPSS 0.4%CVE-2025-58068MEDIUMEventlet affected by HTTP request smuggling in unparsed trailersEPSS 0.4%CVE-2026-75922MEDIUMReverse::Proxy versions before 0.04 for Perl allow HTTP request smuggling via a percent-decoded PATH_INFO written unencoded to the upstream request lineEPSS 0.4%CVE-2026-71554MEDIUMh2: Duplicate Host header could facilitate request smugglingEPSS 0.4%CVE-2026-11541HIGHInconsistent Interpretation of HTTP Requests in CICS Transaction Gateway for Multiplatforms.EPSS 0.4%CVE-2026-94194MEDIUMMint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediariesEPSS 0.4%CVE-2026-67181MEDIUMRouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Transfer-Encoding HeaderEPSS 0.4%CVE-2025-55018MEDIUMAn inconsistent interpretation of http requests ('http request smuggling') vulnerability in Fortinet FortiOS 7.6.0, FortiOS 7.4.0 through 7.EPSS 0.4%CVE-2024-9666MEDIUMOrg.keycloak/keycloak-quarkus-server: keycloak proxy header handling denial-of-service (dos) vulnerabilityEPSS 0.4%CVE-2024-22279MEDIUMGoRouter Denial of Service AttackEPSS 0.4%CVE-2025-1386MEDIUMQuery smuggling in ch-go libraryEPSS 0.4%CVE-2026-59900MEDIUMNetty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing BypassEPSS 0.4%CVE-2026-55614MEDIUMuhttpd vulnerable to HTTP request smuggling via case-sensitive Transfer-Encoding matchingEPSS 0.4%CVE-2026-51376MEDIUMAn issue in BitChat for iOS v1.15.0 allows a remote attacker to cause a denial of service via an unauthenticated MESSAGE packet into the mesEPSS 0.4%CVE-2026-55613MEDIUMuhttpd: HTTP request smuggling via ubus POST body parse-error desyncEPSS 0.4%CVE-2026-15328HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP RequestsEPSS 0.4%CVE-2023-23691HIGH Dell EMC PV ME5, versions ME5.1.0.0.0 and ME5.1.0.1.0, contains a Client-side desync Vulnerability. An unauthenticated attacker could potenEPSS 0.4%CVE-2026-2862MEDIUMSecurity Vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessEPSS 0.4%CVE-2026-1491MEDIUMSecurity Vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessEPSS 0.4%