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-2025-1867CRITICALHTTP Response Smuggling Vulnerability in libhvEPSS 0.4%CVE-2026-1002MEDIUMEclipse Vert.x Web static handler file access denialEPSS 0.4%CVE-2026-111750MEDIUMAIOHTTP: Pure-Python parser request smugglingEPSS 0.4%CVE-2026-50052LOWIn Vinyl Cache before 9.0.1 and Varnish Cache before 9.0.3, a deficiency in HTTP/2 request parsing can be exploited to launch a backend requEPSS 0.4%CVE-2026-42580MEDIUMNetty: HTTP Request Smuggling due to incorrect chunk size parsingEPSS 0.4%CVE-2023-54397CRITICALTornado before 6.3.3 HTTP Request Smuggling via Content-LengthEPSS 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-2025-12811MEDIUMCloud Suite and Privilege Access Service– HTTP request smuggling vulnerabilityEPSS 0.4%CVE-2026-69216MEDIUMHttp4s: Ember chunk parser lenience (TE.TE request smuggling)EPSS 0.4%CVE-2025-12642MEDIUMHTTP Header Smuggling via Trailer MergeEPSS 0.4%CVE-2026-15634MEDIUMIBM WebSphere Application Server and IBM WebSphere Application Server - Liberty Request SmugglingEPSS 0.4%CVE-2023-53878MEDIUMMember Login Script 3.3 Client-Side Request Desynchronization VulnerabilityEPSS 0.4%CVE-2026-15396MEDIUMIBM WebSphere Application Server IBM WebSphere Application Server - Liberty HTTP Request SmugglingEPSS 0.4%CVE-2025-47905MEDIUMVarnish Cache before 7.6.3 and 7.7 before 7.7.1, and Varnish Enterprise before 6.0.13r14, allow client-side desync via HTTP/1 requests, becaEPSS 0.4%CVE-2026-40561MEDIUMStarlet versions through 0.31 for Perl allows HTTP Request Smuggling via Improper Header PrecedenceEPSS 0.4%CVE-2024-14029CRITICALTornado before 6.4.1 HTTP Request Smuggling via Transfer-EncodingEPSS 0.4%CVE-2026-103995LOWLenient parsing of integers for response body and chunk framingEPSS 0.4%CVE-2025-41235HIGHCVE-2025-41235: Spring Cloud Gateway Server Forwards Headers from Untrusted ProxiesEPSS 0.4%CVE-2025-53643LOWAIOHTTP is vulnerable to HTTP Request/Response Smuggling through incorrect parsing of chunked trailer sectionsEPSS 0.4%