Falhas do tipo CWE-444

323 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-2026-15396MEDIUMIBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilitiesEPSS 0.3%CVE-2026-15634MEDIUMIBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilitiesEPSS 0.3%CVE-2026-59898MEDIUMNetty: WebSockets V07/V08 handshaker missing Connection/Upgrade validationEPSS 0.2%CVE-2025-52892MEDIUMEspoCRM is vulnerable to access denial through double slash in URI corrupting router cacheEPSS 0.2%CVE-2026-58044LOWA flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from EPSS 0.2%CVE-2025-69224MEDIUMAIOHTTP's Unicode processing of header values could cause parsing discrepanciesEPSS 0.2%CVE-2026-89044MEDIUMNetty 4.1.133.Final through 4.1.137.Final and 4.2.13.Final through 4.2.17.Final HTTP Request Smuggling via Transfer-EncodingEPSS 0.2%CVE-2026-69216MEDIUMHttp4s: Ember chunk parser lenience (TE.TE request smuggling)EPSS 0.2%CVE-2026-18540LOWundici vulnerable to downstream response splitting via retry interceptorEPSS 0.2%CVE-2026-66752MEDIUMtiny-http 0.12.0 HTTP Request Smuggling via Transfer-Encoding HandlingEPSS 0.2%CVE-2026-50020MEDIUMNetty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permittedEPSS 0.2%CVE-2026-59900MEDIUMNetty codec-http2: Lack of Host Header Deduplication in HTTP/2→HTTP/1.x Translation Leads to Request Routing BypassEPSS 0.2%CVE-2026-15328HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty is inconsistent Interpretation of HTTP RequestsEPSS 0.2%CVE-2026-11548MEDIUMMultiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced.EPSS 0.2%CVE-2026-11722MEDIUMMultiple security vulnerabilities may affect IBM WebSphere Liberty that is shipped with IBM CICS TX Advanced.EPSS 0.2%CVE-2026-84380MEDIUMHTTPX2: Conflicting Content-Length and Transfer-Encoding headers can be auto-generatedEPSS 0.2%CVE-2026-15064HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilitiesEPSS 0.2%CVE-2026-79713MEDIUMBreeze Cache 1.2.5 - 2.5.14 - Unauthenticated Cache Poisoning via Unkeyed Tracking ParametersEPSS 0.2%CVE-2026-78605MEDIUMInconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') in Elasticsearch Leading to Information DisclosureEPSS 0.2%CVE-2026-15325HIGHIBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilitiesEPSS 0.2%