Weaknesses of type CWE-20

5,439 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-2026-7165CRITICALMultiple vulnerabilities in the Assassin game by GaudireEPSS 0.5%CVE-2026-47369CRITICALA malicious actor with access to the network and low privileges could exploit an Improper Input Validation vulnerability found in certain deEPSS 0.5%CVE-2026-13706NONEUrlShortener extension url validation can be bypassed due to difference between php url parsing and WHATWGEPSS 0.5%CVE-2025-15545HIGHInsufficient Backup File Upload Input Validation on TP-Link Archer RE605XEPSS 0.5%CVE-2026-19913HIGHCVE-2026-19913EPSS 0.5%CVE-2026-33029MEDIUMNginx UI: DoS via Negative Integer Input in Logrotate IntervalEPSS 0.5%CVE-2026-27306HIGHColdFusion | Improper Input Validation (CWE-20)EPSS 0.5%CVE-2025-6625HIGHCWE-20: Improper Input Validation vulnerability exists that could cause a Denial Of Service when specific crafted FTP command is sent to theEPSS 0.5%CVE-2022-44556HIGHMissing parameter type validation in the DRM module. Successful exploitation of this vulnerability may affect availability. EPSS 0.5%CVE-2026-0878HIGHSandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL componentEPSS 0.5%CVE-2025-61582HIGHTs3 Manager: Unauthenticated Denial of Service possible through specially crafted Unicode inputEPSS 0.5%CVE-2026-34760MEDIUMvLLM: Downmix Implementation Differences as Attack Vectors Against Audio AI ModelsEPSS 0.5%CVE-2022-23814MEDIUMFailure to validate addresses provided by software to BIOS commands may result in a potential loss of integrity of guest memory in a confideEPSS 0.5%CVE-2022-48356—The facial recognition module has a vulnerability in input parameter verification. Successful exploitation of this vulnerability may cause fEPSS 0.5%CVE-2026-48108MEDIUMRussh: SSH identification parsing accepted non-canonical client banners and did not bound pre-banner inputEPSS 0.5%CVE-2022-41901MEDIUM`CHECK_EQ` fail via input in `SparseMatrixNNZ` in TensorflowEPSS 0.5%CVE-2022-41898MEDIUM`CHECK` fail via inputs in `SparseFillEmptyRowsGrad` in TensorflowEPSS 0.5%CVE-2025-59198MEDIUMWindows Search Service Denial of Service VulnerabilityEPSS 0.5%CVE-2022-41899MEDIUM`CHECK` fail via inputs in `SdcaOptimizer` in TensorflowEPSS 0.5%CVE-2022-41896MEDIUM`tf.raw_ops.Mfcc` crashes in TensorflowEPSS 0.5%