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-2024-20915MEDIUMVulnerability in the Oracle Application Object Library product of Oracle E-Business Suite (component: Login - SSO). Supported versions thatEPSS 0.5%CVE-2026-1525MEDIUMundici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')EPSS 0.5%CVE-2026-88008HIGHTraefik: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') and Incorrect AuthorizationEPSS 0.5%CVE-2024-49768CRITICALWaitress has request processing race condition in HTTP pipelining with invalid first requestEPSS 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-2026-69205HIGHHttp4s: Ember Transfer-Encoding value parsing (TE.CL / TE.0 request smuggling)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-2026-50052LOWIn 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 0.5%CVE-2025-6442MEDIUMRuby WEBrick read_header HTTP Request Smuggling VulnerabilityEPSS 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-2026-48979HIGHPHP Standard Library: HTTP/2 server-side missing content-length validation enables request smugglingEPSS 0.5%CVE-2025-49005LOWNext.js cache poisoning due to omission of Vary headerEPSS 0.5%CVE-2026-23941HIGHRequest smuggling via first-wins Content-Length parsing in inets httpdEPSS 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%CVE-2026-1760MEDIUMLibsoup: soupserver: denial of service via http request smugglingEPSS 0.4%CVE-2026-84363MEDIUMHono: Query parser reads parameters after the URL fragment, causing cache-key and proxy interpretation differentialsEPSS 0.4%CVE-2025-3110MEDIUMOpenVPN Access Server 2.7.2 through 3.1.0 accepts bare line-feed sequences inside HTTP header values, allowing remote attackers to perform HEPSS 0.4%CVE-2026-52845HIGHCaddy: FastCGI header normalization bypass in `forward_auth copy_headers`EPSS 0.4%