Weaknesses of type CWE-20

5,888 results

Validação inadequada de entrada

O software recebe dados do usuário ou de fontes externas, mas não verifica ou verifica de forma incompleta se esses dados têm as propriedades necessárias para processar com segurança. Isso permite que entradas malformadas, maliciosas ou inesperadas passem por controles e causem comportamentos indevidos — desde crashes até injeção de código.

Example

Uma aplicação web recebe um parâmetro numérico via GET, mas não valida se é realmente um número inteiro válido antes de usá-lo em uma consulta SQL. Um atacante envia um valor com caracteres especiais (ex: `1' OR '1'='1`), conseguindo injetar código SQL direto no banco de dados.

How to mitigate

Implemente validação rigorosa na entrada: defina o tipo, formato, comprimento e intervalo esperados; rejeite tudo que não se encaixe. Use listas de caracteres permitidos ('whitelist'), escape de dados para o contexto específico (SQL, HTML, URL) e bibliotecas de validação consolidadas. Nunca confie em dados do cliente.

CVE-2022-3676MEDIUMIn Eclipse Openj9 before version 0.35.0, interface calls can be inlined without a runtime type check. Malicious bytecode could make use of tEPSS 0.8%CVE-2022-23014—On versions 16.1.x before 16.1.2 and 15.1.x before 15.1.4.1, when BIG-IP APM portal access is configured on a virtual server, undisclosed reEPSS 0.8%CVE-2021-25255HIGHYandex Browser Lite for Android prior to version 21.1.0 allows remote attackers to cause a denial of service.EPSS 0.8%CVE-2022-31041HIGHInsufficient content-type validation for uploaded files in open-formsEPSS 0.8%CVE-2023-46159LOWIBM Storage Ceph denial of serviceEPSS 0.8%CVE-2024-43561MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2024-42516HIGHApache HTTP Server: HTTP response splittingEPSS 0.8%CVE-2024-43557MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2024-43558MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2022-33876MEDIUMMultiple instances of improper input validation vulnerability in Fortinet FortiADC version 7.1.0, version 7.0.0 through 7.0.2 and version 6.EPSS 0.8%CVE-2023-28304HIGHMicrosoft ODBC and OLE DB Remote Code Execution VulnerabilityEPSS 0.8%CVE-2022-28708MEDIUMOn F5 BIG-IP 16.1.x versions prior to 16.1.2.2 and 15.1.x versions prior to 15.1.5.1, when a BIG-IP DNS resolver-enabled, HTTP-Explicit or SEPSS 0.8%CVE-2026-106613HIGHColdFusion | Improper Input Validation (CWE-20)EPSS 0.8%CVE-2024-27447CRITICALpretix before 2024.1.1 mishandles file validation.EPSS 0.8%CVE-2022-4032HIGHQuiz and Survey Master <= 8.0.4 - Unauthenticated iFrame Injection via Paragraph and Short AnswerEPSS 0.8%CVE-2023-5763MEDIUMGlassfish remote code executionEPSS 0.8%CVE-2023-20255MEDIUMA vulnerability in an API of the Web Bridge feature of Cisco Meeting Server could allow an unauthenticated, remote attacker to cause a deniaEPSS 0.8%CVE-2021-26630HIGHHANDY Groupware file download and execute vulnerabilityEPSS 0.8%CVE-2025-7876MEDIUMMetasoft 美特软件 MetaCRM download.jsp AnalyzeParam deserializationEPSS 0.8%CVE-2020-15199MEDIUMDenial of Service in TensorflowEPSS 0.8%