Falhas do tipo CWE-20

5.399 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-2026-77540CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi OS EPSS 1.3%CVE-2026-77535CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UniFi NetEPSS 1.3%CVE-2026-77542CRITICALA malicious actor with access to the network and high privileges could exploit an Improper Input Validation vulnerability found in UID EnterEPSS 1.3%CVE-2026-26106HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 1.3%CVE-2020-14338—A flaw was found in Wildfly's implementation of Xerces, specifically in the way the XMLSchemaValidator class in the JAXP component of WildflEPSS 1.3%CVE-2020-15106MEDIUMImproper Input Validation in etcdEPSS 1.3%CVE-2021-22766HIGHA CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All VersionsEPSS 1.3%CVE-2026-42537CRITICALApache Ranger: Remote Code Execution via JDBC URL InjectionEPSS 1.3%CVE-2023-30442MEDIUMIBM Db2 denial of serviceEPSS 1.3%CVE-2021-36321HIGHDell Networking X-Series firmware versions prior to 3.0.1.8 contain an improper input validation vulnerability. A remote unauthenticated attEPSS 1.3%CVE-2020-1662HIGHJunos OS and Junos OS Evolved: RPD crash due to BGP session flapping.EPSS 1.3%CVE-2022-2047LOWIn Eclipse Jetty versions 9.4.0 thru 9.4.46, and 10.0.0 thru 10.0.9, and 11.0.0 thru 11.0.9 versions, the parsing of the authority segment oEPSS 1.3%CVE-2023-41748HIGHRemote command execution due to improper input validation. The following products are affected: Acronis Cloud Manager (Windows) before buildEPSS 1.3%CVE-2023-41746HIGHRemote command execution due to improper input validation. The following products are affected: Acronis Cloud Manager (Windows) before buildEPSS 1.3%CVE-2026-85979HIGHCommand Injection in Puppet EnterpriseEPSS 1.3%CVE-2025-34108HIGHDisk Pulse Enterprise 9.0.34 Login Stack Buffer OverflowEPSS 1.3%CVE-2020-25626—A flaw was found in Django REST Framework versions before 3.12.0 and before 3.11.2. When using the browseable API viewer, Django REST FramewEPSS 1.3%CVE-2023-1973HIGHUndertow: unrestricted request storage leads to memory exhaustionEPSS 1.3%CVE-2020-3370MEDIUMCisco Content Security Management Appliance Filter Bypass VulnerabilityEPSS 1.3%CVE-2022-24905MEDIUMArgo CD login screen allows message spoofing if SSO is enabledEPSS 1.3%