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-2026-74848HIGHApache APISIX: Cross-user response poisoning in serverless pluginsEPSS 0.6%CVE-2024-35538MEDIUMTypecho v1.3.0 was discovered to contain a Client IP Spoofing vulnerability, which allows attackers to falsify their IP addresses by specifyEPSS 0.6%CVE-2026-8646HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilitiesEPSS 0.6%CVE-2026-31842HIGHTinyproxy HTTP request parsing desynchronization via case-sensitive Transfer-Encoding handlingEPSS 0.6%CVE-2024-29643CRITICALAn issue in croogo v.3.0.2 allows an attacker to perform Host header injection via the feed.rss component.EPSS 0.6%CVE-2026-55087MEDIUMEtherpad: x-proxy-path header reflected into admin HTML/JS/CSS (cache-poisoning XSS) and concatenated into redirect (open-redirect)EPSS 0.6%CVE-2026-73276HIGHinets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping iEPSS 0.6%CVE-2026-66357HIGHinets,httpd:HTTP Request Smuggling via obs-fold Header ContinuationEPSS 0.6%CVE-2026-69204CRITICALHttp4s: Ember accepts Transfer-Encoding combined with Content-Length (CL.TE request smuggling)EPSS 0.6%CVE-2026-24033MEDIUMApache Traffic Server: Request smuggling via chunked extension quoted-string parsingEPSS 0.6%CVE-2022-38114MEDIUMClient-Side Desync Vulnerability EPSS 0.6%CVE-2026-58150HIGHApache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smugglingEPSS 0.6%CVE-2026-73051MEDIUMactix-http before 3.12.1 HTTP Request Smuggling via CL.TEEPSS 0.6%CVE-2024-52304MEDIUMaiohttp vulnerable to request smuggling due to incorrect parsing of chunk extensionsEPSS 0.6%CVE-2026-1525MEDIUMundici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')EPSS 0.6%CVE-2026-105298MEDIUMPingora HTTP/2 :authority and Host header mismatch enables cache poisoning and host-based access control bypassEPSS 0.6%CVE-2026-86146HIGHApache bRPC: HTTP Request Smuggling and Header Injection via Lenient HTTP/1.1 Header ParsingEPSS 0.5%CVE-2024-23316HIGHPingAccess HTTP Request Desynchronization WeaknessEPSS 0.5%CVE-2021-33683MEDIUMSAP Web Dispatcher and Internet Communication Manager (ICM), versions - KRNL32NUC 7.21, 7.21EXT, 7.22, 7.22EXT, KRNL32UC 7.21, 7.21EXT, 7.22EPSS 0.5%CVE-2025-14523HIGHLibsoup: libsoup: duplicate host header handling causes host-parsing discrepancy (first- vs last-value wins)EPSS 0.5%