Weaknesses of type CWE-444

365 results

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. O atacante injeta headers ou manipula o tamanho do corpo da requisição (via Content-Length ou Transfer-Encoding) para fazer o intermediário e o servidor final processar requisições distintas. Isso permite contornar controles de segurança, envenenar caches, sequestrar sessões de outros usuários ou executar ataques no servidor.

Example

Um atacante envia uma requisição com dois headers Content-Length conflitantes, ou mistura Content-Length com Transfer-Encoding chunked. O proxy interpreta o fim da requisição em um ponto, enquanto o servidor backend interpreta em outro, fazendo com que parte do payload do atacante seja concatenado à próxima requisição de um usuário legítimo.

How to mitigate

Normalize e valide rigorosamente headers HTTP (Content-Length, Transfer-Encoding) em proxies e servidores; use HTTP/2 ou HTTP/3 que mitigam o problema; mantenha proxy e backend sincronizados quanto à interpretação de requisições; desabilite HTTP/1.0 se possível e aplique filtros que rejeitem requisições ambíguas ou malformadas.

CVE-2026-32239MEDIUMCap'n Proto has an integer overflow in KJ-HTTPEPSS 0.2%CVE-2026-32240MEDIUMCap'n Proto: Integer overflow in KJ-HTTP chunk sizeEPSS 0.2%CVE-2026-10841MEDIUMIBM WebSphere Application Server and IBM WebSphere Application Server - Liberty HTTP Request SmugglingEPSS 0.2%CVE-2026-100659MEDIUMNetty 4.2.0 through 4.2.17 HTTP/3 Request Routing BypassEPSS 0.2%CVE-2026-91920MEDIUMUndertow: undertow: chunkreader message length permits chunk-size overflowEPSS 0.2%CVE-2026-50020MEDIUMNetty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permittedEPSS 0.2%CVE-2026-121441MEDIUMWasmtime before 36.0.19, 37.0.0 before 48.0.7, and 49.0.0 before 49.0.4 wasi-http Request SmugglingEPSS 0.2%CVE-2026-84380MEDIUMHTTPX2: Conflicting Content-Length and Transfer-Encoding headers can be auto-generatedEPSS 0.2%CVE-2026-111809MEDIUMApache Traffic Server: HEAD requests carrying Content-Length or Transfer-Encoding enable request smugglingEPSS 0.2%CVE-2026-4742LOWHTTP Request Smuggling in visualfc/liteideEPSS 0.2%CVE-2026-103866—Apache Sling Engine: Hand-rolled parameter parser diverges from RFC/container parsing, enabling smugglingEPSS 0.2%CVE-2026-34441MEDIUMcpp-httplib: HTTP Request Smuggling via Unconsumed GET Request BodyEPSS 0.2%CVE-2022-39163MEDIUMIBM Cognos Controller HTTP response smugglingEPSS 0.2%CVE-2026-26365MEDIUMAkamai Ghost on Akamai CDN edge servers before 2026-02-06 mishandles processing of custom hop-by-hop HTTP headers, where an incoming requestEPSS 0.2%CVE-2025-4600HIGHHTTP Request Smuggling in Google Cloud Classic Application Load Balancer due to Improper Chunked Encoding ValidationEPSS 0.2%CVE-2024-8912HIGHHTTP Request Smuggling in LookerEPSS 0.2%CVE-2026-121439MEDIUMWasmtime 46.0.0 before 48.0.7 and 49.0.0 before 49.0.4 HTTP Response Splitting via wasi-httpEPSS 0.2%CVE-2026-112212HIGHInconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') in GitLabEPSS 0.2%CVE-2026-41853MEDIUMSpring Framework Multipart Request Smuggling in Spring MVC and WebFluxEPSS 0.2%CVE-2025-31958LOWHCL BigFix Service Management (SM) is susceptible to HTTP Request SmugglingEPSS 0.2%