Falhas do tipo CWE-20

5.417 resultados

Validação inadequada de entrada

A aplicação recebe dados do usuário ou de fontes externas mas não valida (ou valida mal) se esses dados têm as propriedades necessárias para processamento seguro. Isso abre porta para injeção de código, buffer overflow, lógica corrompida e outros ataques que exploram dados malformados ou maliciosos.

Exemplo

Um formulário web aceita um CPF sem verificar se tem 11 dígitos numéricos, ou um app móvel recebe um ID de usuário em JSON sem confirmar se é um inteiro — atacantes exploram isso para acessar dados de outros usuários, executar queries SQL maliciosas ou causar erro de processamento.

Como mitigar

Implemente validação rigorosa na entrada: verifique tipo, comprimento, formato, intervalo de valores permitidos. Use whitelist (aceitar só o que você sabe ser seguro) em vez de blacklist. Valide tanto no cliente quanto no servidor, e use bibliotecas de parsing seguro para formatos complexos (XML, JSON).

CVE-2023-27491MEDIUMEnvoy forwards invalid Http2/Http3 downstream headersEPSS 0.9%CVE-2026-47930HIGHColdFusion | Improper Input Validation (CWE-20)EPSS 0.9%CVE-2023-6012HIGHIncorrect input data validation in Lanaccess ONSAFE MonitorHM Web ConsoleEPSS 0.9%CVE-2026-21273HIGHColdFusion | Improper Input Validation (CWE-20)EPSS 0.9%CVE-2020-7871HIGHA vulnerability of Helpcom could allow an unauthenticated attacker to execute arbitrary command. This vulnerability exists due to insufficieEPSS 0.9%CVE-2018-10922HIGHAn input validation flaw exists in ttembed. With a crafted input file, an attacker may be able to trigger a denial of service condition due EPSS 0.9%CVE-2021-23853HIGHImproper Input Validation of HTTP HeadersEPSS 0.9%CVE-2023-38690MEDIUMmatrix-appservice-irc IRC command injection via admin commands containing newlines EPSS 0.9%CVE-2025-20184MEDIUMCisco Secure Email and Web Manager and Secure Web Appliance Command Injection VulnerabilityEPSS 0.9%CVE-2026-49827CRITICALWebErpMesv2 has Unauthenticated RCE via Unrestricted File Upload in HR Expense scan_file (CWE-434)EPSS 0.9%CVE-2026-27590HIGHCaddy: Unicode case-folding length expansion causes incorrect split_path index (SCRIPT_NAME/PATH_INFO confusion) in FastCGI transportEPSS 0.9%CVE-2024-38261HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-78518HIGHMicrosoft Office Excel Remote Code Execution VulnerabilityEPSS 0.9%CVE-2026-69614HIGHMicrosoft Office Access Remote Code Execution VulnerabilityEPSS 0.9%CVE-2025-1077CRITICALRemote Code Execution vulnerability in IBL Software Engineering Visual Weather and derived products (NAMIS, Aero Weather, Satellite Weather)EPSS 0.9%CVE-2023-1289—A vulnerability was discovered in ImageMagick where a specially created SVG file loads itself and causes a segmentation fault. This flaw allEPSS 0.9%CVE-2021-36322MEDIUMDell Networking X-Series firmware versions prior to 3.0.1.8 contain a host header injection vulnerability. A remote unauthenticated attackerEPSS 0.9%CVE-2024-44808CRITICALAn issue in Vypor Attack API System v.1.0 allows a remote attacker to execute arbitrary code via the user GET parameter.EPSS 0.9%CVE-2026-55993HIGHApache Camel Atmosphere Websocket: The inbound consumer maps externally-supplied WebSocket query parameters into the Exchange without a HeaderFilterStrategy, allowing injection of Camel control headers - enabling influencing internal behaviourEPSS 0.9%CVE-2017-16005—Http-signature is a "Reference implementation of Joyent's HTTP Signature Scheme". In versions <=0.9.11, http-signature signs only the headerEPSS 0.9%