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-2026-1801MEDIUMLibsoup: 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-2026-94439HIGHHTTP/1 server connection desynchronization after 2xx CONNECT response in net/httpEPSS 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-2026-55613MEDIUMuhttpd: HTTP request smuggling via ubus POST body parse-error desyncEPSS 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-2026-15328HIGHIBM 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%