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-2026-92238CRITICALAmbiguous parsing of mail headersEPSS 0.5%CVE-2026-58155CRITICALApache Traffic Server: Header-name length truncation enables header aliasing and request smugglingEPSS 0.5%CVE-2025-4366HIGHRequest Smuggling Vulnerability in PingoraEPSS 0.5%CVE-2026-28497CRITICALTinyWeb: Integer Overflow in `_Val` (HTTP Request Smuggling)EPSS 0.5%CVE-2024-44775HIGHkmqtt v0.2.7 is vulnerable to Denial of Service (DoS) due to a Null Pointer Exception. A remote attacker can cause the broker to crash by seEPSS 0.5%CVE-2026-68006CRITICALAn issue in Puma v.5.0.0 and before v.8.0.3 allows an attacker to execute arbitrary code via the ext/puma_http11/http11_parser.rl fileEPSS 0.5%CVE-2026-77756LOWApache Tomcat: Transfer-Encoding honored for HTTP/1.0 requestsEPSS 0.5%CVE-2026-59249MEDIUMSign-tolerant HTTP/1 chunk-size parser in Mint enables response smuggling against strict intermediaries on pooled connectionsEPSS 0.5%CVE-2026-73812HIGHinets, httpd: HTTP Request Smuggling via Transfer-Encoding and Content-LengthEPSS 0.5%CVE-2026-1525MEDIUMundici is vulnerable to Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')EPSS 0.5%CVE-2026-82672MEDIUMUnvalidated chunk-size line tail in Mint HTTP/1 client enables response smuggling against strict intermediaries on pooled connectionsEPSS 0.5%CVE-2024-21088HIGHVulnerability in the Oracle Production Scheduling product of Oracle E-Business Suite (component: Import Utility). Supported versions that aEPSS 0.5%CVE-2026-58047MEDIUMHTTP Smuggling in cPanel allows potential leak of credentials.EPSS 0.5%CVE-2026-50197HIGHSkipper: opaAuthorizeRequestWithBody filter bypasses OPA policy on Transfer-Encoding: chunked / HTTP/2 requestsEPSS 0.5%CVE-2026-85078MEDIUMsanic chunked trailer request smuggling allows hidden second request executionEPSS 0.5%CVE-2025-23167MEDIUMA flaw in Node.js 20's HTTP parser allows improper termination of HTTP/1 headers using `\r\n\rX` instead of the required `\r\n\r\n`. This inEPSS 0.5%CVE-2026-55458LOWCaddy: RFC 7230 §6.1 compliance issue / Hop-by-hop headers that leak throughEPSS 0.5%CVE-2026-69217HIGHHttp4s: Ember Server accepts duplicate Content-Length headersEPSS 0.5%CVE-2025-12874MEDIUMHTTP Request Smuggling in Quest Coexistence Manager for NotesEPSS 0.5%CVE-2025-6442MEDIUMRuby WEBrick read_header HTTP Request Smuggling VulnerabilityEPSS 0.5%