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-2024-53868HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.7%CVE-2026-2833CRITICALHTTP Request Smuggling via Premature UpgradeEPSS 0.7%CVE-2024-9622MEDIUMResteasy-netty4-cdi: resteasy-netty4: resteasy-reactor-netty: http request smuggling leading to client timeouts in resteasy-netty4EPSS 0.6%CVE-2026-58153MEDIUMApache Traffic Server: HTTP/2 to HTTP/1 conversion forwards origin trailers to clients unsafelyEPSS 0.6%CVE-2025-61258HIGHOutsystems Platform Server 11.18.1.37828 allows attackers to cause a denial of service via a crafted content-length value mismatching the boEPSS 0.6%CVE-2026-42581MEDIUMNetty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling SanitizationEPSS 0.6%CVE-2026-67182MEDIUMRouille 0.3.3 - 3.6.2 HTTP Request Smuggling via proxy Header InjectionEPSS 0.6%CVE-2026-73494HIGHblaze: Multiple HTTP/1.1 request-smuggling primitives in blaze's Java wire parserEPSS 0.6%CVE-2026-23527HIGHh3 v1 has Request Smuggling (TE.TE) issueEPSS 0.6%CVE-2026-39805MEDIUMCL.CL HTTP request smuggling via duplicate Content-Length in banditEPSS 0.6%CVE-2026-13762HIGHHTTP/2 Stream Parser Confusion Body-Inspection Bypass in Amazon CloudFront with AWS WAFEPSS 0.6%CVE-2024-56908MEDIUMIn Perfex Crm < 3.2.1, an authenticated attacker can send a crafted HTTP POST request to the affected upload_sales_file endpoint. By providiEPSS 0.6%CVE-2026-57834HIGHApache Traffic Server: Malformed chunked message body allows request smugglingEPSS 0.6%CVE-2024-38494HIGHSymantec Privileged Access Manager Remote Command Execution vulnerabilityEPSS 0.6%CVE-2026-56866HIGHHTTP/1 client connection desynchronization after CONNECT rejection in net/httpEPSS 0.6%CVE-2026-114216MEDIUMChunk extensions accept bare LF and CR, enabling request smuggling in BanditEPSS 0.6%CVE-2025-32094MEDIUMAn issue was discovered in Akamai Ghost, as used for the Akamai CDN platform before 2025-03-26. Under certain circumstances, a client makingEPSS 0.6%CVE-2024-56523CRITICALRadware Cloud Web Application Firewall (WAF) before 2025-05-07 allows remote attackers to bypass firewall filters by placing random data in EPSS 0.6%CVE-2020-5218MEDIUMAbility in Sylius to switch channels via GET parameter enabled in production environmentsEPSS 0.6%CVE-2026-74848HIGHApache APISIX: Cross-user response poisoning in serverless pluginsEPSS 0.6%