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-2026-2708LOWLibsoup: libsoup: http request smuggling via duplicate content-length headersEPSS 0.4%CVE-2026-1801MEDIUMLibsoup: libsoup: http request smuggling via malformed chunk headersEPSS 0.4%CVE-2024-9666MEDIUMOrg.keycloak/keycloak-quarkus-server: keycloak proxy header handling denial-of-service (dos) vulnerabilityEPSS 0.4%CVE-2026-50020MEDIUMNetty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permittedEPSS 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-2026-51376MEDIUMAn 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-2026-34525MEDIUMAIOHTTP: Duplicate Host header acceptedEPSS 0.4%CVE-2026-15328HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP RequestsEPSS 0.4%CVE-2026-1002MEDIUMEclipse Vert.x Web static handler file access denialEPSS 0.4%CVE-2025-58068MEDIUMEventlet affected by HTTP request smuggling in unparsed trailersEPSS 0.4%CVE-2025-1386MEDIUMQuery smuggling in ch-go libraryEPSS 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-2025-1867CRITICALHTTP Response Smuggling Vulnerability in libhvEPSS 0.4%CVE-2024-34535MEDIUMIn Mastodon 4.1.6, API endpoint rate limiting can be bypassed by setting a crafted HTTP request header.EPSS 0.4%CVE-2025-59822MEDIUMHttp4s vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sectionEPSS 0.4%CVE-2023-53878MEDIUMMember Login Script 3.3 Client-Side Request Desynchronization VulnerabilityEPSS 0.4%CVE-2026-8620HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities when using when using Web Server Plug-insEPSS 0.4%CVE-2026-1491MEDIUMSecurity Vulnerabilities have been found in IBM Verify Identity Access and IBM Security Verify AccessEPSS 0.4%CVE-2026-69216MEDIUMHttp4s: Ember chunk parser lenience (TE.TE request smuggling)EPSS 0.4%CVE-2023-54397CRITICALTornado before 6.3.3 HTTP Request Smuggling via Content-LengthEPSS 0.4%