Falhas do tipo CWE-444

365 resultados

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. Um atacante envia uma requisição ambígua que a camada intermediária processa como um pedido, mas o servidor entende como dois pedidos distintos — permitindo contornar controles de segurança, injetar requisições maliciosas ou sequestrar sessões de outros usuários.

Exemplo

Um proxy usa Content-Length para delimitar o corpo da requisição, enquanto o servidor backend prioriza Transfer-Encoding: chunked. O atacante envia um payload onde a primeira requisição termina segundo o proxy, mas o servidor vê uma segunda requisição oculta no corpo — essa segunda requisição pode roubar dados de sessão de outros usuários ou contornar WAF.

Como mitigar

Desabilite Transfer-Encoding: chunked em proxies se possível, normalize e valide rigorosamente headers HTTP (Content-Length e Transfer-Encoding não devem coexistir), mantenha proxy e servidor backend sincronizados em versão e configuração, e teste parsing ambíguo com ferramentas como http-request-smuggler.

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-2026-66357HIGHinets,httpd:HTTP Request Smuggling via obs-fold Header ContinuationEPSS 0.6%CVE-2026-73276HIGHinets, httpd: HTTP Request Smuggling via Whitespace-Before-Colon Header Dropping iEPSS 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-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-2026-105298MEDIUMPingora 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%CVE-2026-81356HIGHVisual Studio Code Security Feature Bypass VulnerabilityEPSS 0.5%