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-2026-55458LOWCaddy: RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak throughEPSS 0.5%CVE-2026-69217HIGHHttp4s: Ember Server accepts duplicate Content-Length headersEPSS 0.5%CVE-2025-12874MEDIUMHTTP Request Smuggling in Quest Coexistence Manager for NotesEPSS 0.5%CVE-2025-6442MEDIUMRuby WEBrick read_header HTTP Request Smuggling VulnerabilityEPSS 0.5%CVE-2024-20915MEDIUMVulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Login - SSO). Supported versions thatEPSS 0.5%CVE-2025-49005LOWNext.js cache poisoning due to omission of Vary headerEPSS 0.5%CVE-2026-88008HIGHTraefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect AuthorizationEPSS 0.5%CVE-2026-40560HIGHStarman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header PrecedenceEPSS 0.5%CVE-2024-49768CRITICALWaitress has request processing race condition in HTTP pipelining with invalid first requestEPSS 0.5%CVE-2026-86350CRITICALApache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-upEPSS 0.5%CVE-2026-69205HIGHHttp4s: Ember Transfer-Encoding value parsing (TE.CL / TE.0 request smuggling)EPSS 0.5%CVE-2026-73495HIGHblaze: Chunked-body trailer fields promoted into Request.headers in blaze-server (front-end header-sanitization bypass)EPSS 0.5%CVE-2023-49584MEDIUMClient-Side Desynchronization vulnerability in SAP Fiori LaunchpadEPSS 0.5%CVE-2023-51701MEDIUM@fastify-reply-from JSON Content-Type parsing confusionEPSS 0.5%CVE-2026-1760MEDIUMLibsoup: soupserver: denial of service via http request smugglingEPSS 0.5%CVE-2026-11806HIGHIBM WebSphere Application Server Liberty is affected by a an arbitrary file read vulnerabilityEPSS 0.5%CVE-2023-52354HIGHchasquid before 1.13 allows SMTP smuggling because LF-terminated lines are accepted.EPSS 0.5%CVE-2026-73548HIGHEnvoy: Cross-user response poisoning via a generic (non-WebSocket) HTTP upgrade on Envoy's shared backend poolEPSS 0.5%CVE-2026-29057MEDIUMNext.js: HTTP request smuggling in rewritesEPSS 0.5%CVE-2023-50811MEDIUMAn issue discovered in SELESTA Visual Access Manager 4.38.6 allows attackers to modify the “computer” POST parameter related to the ID of a EPSS 0.5%