Weaknesses of type CWE-20

5,399 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-2016-8651LOWAn input validation flaw was found in the way OpenShift 3 handles requests for images. A user, with a copy of the manifest associated with aEPSS 1.4%CVE-2020-15174HIGHUnpreventable top-level navigation in ElectronEPSS 1.4%CVE-2020-3358HIGHCisco RV340, RV340W, RV345, and RV345P Dual WAN Gigabit VPN Routers SSL Denial of Service VulnerabilityEPSS 1.4%CVE-2023-39532CRITICALSES's dynamic import and spread operator provides possible path to arbitrary exfiltration and executionEPSS 1.3%CVE-2021-1262HIGHCisco SD-WAN Command Injection VulnerabilitiesEPSS 1.3%CVE-2019-1886HIGHCisco Web Security Appliance HTTPS Certificate Denial of Service VulnerabilityEPSS 1.3%CVE-2022-3001HIGHVulnerability in Milesight Video Management Systems (VMS)EPSS 1.3%CVE-2021-32642HIGHMissing input validation in dynamic discovery example scripts.EPSS 1.3%CVE-2020-28590HIGHAn out-of-bounds read vulnerability exists in the Obj File TriangleMesh::TriangleMesh() functionality of Slic3r libslic3r 1.3.0 and Master CEPSS 1.3%CVE-2021-40423HIGHA denial of service vulnerability exists in the cgiserver.cgi API command parser functionality of Reolink RLC-410W v3.0.0.136_20121102. A spEPSS 1.3%CVE-2023-30447MEDIUMIBM Db2 denial of serviceEPSS 1.3%CVE-2023-30446MEDIUMIBM Db2 denial of serviceEPSS 1.3%CVE-2021-32759HIGHData Flow Sanitation Issue FixEPSS 1.3%CVE-2021-1464MEDIUMCisco SD-WAN vManage Authorization Bypass VulnerabilityEPSS 1.3%CVE-2025-31672MEDIUMApache POI: parsing OOXML based files (xlsx, docx, etc.), poi-ooxml could read unexpected data if underlying zip has duplicate zip entry namesEPSS 1.3%CVE-2021-42787CRITICALDirectory Traversal Write/Delete/Partial Read at AgentConfigurationServletEPSS 1.3%CVE-2022-47894MEDIUMApache Zeppelin SAP: connecting to a malicious SAP server allowed it to perform XXEEPSS 1.3%CVE-2024-41116CRITICALRemote code execution in streamlit geospatial in pages/1_📷_Timelapse.py MODIS Ocean Color SMI option vis_paramsEPSS 1.3%CVE-2024-41117CRITICALRemote code execution in streamlit geospatial in pages/10_🌍_Earth_Engine_Datasets.pyEPSS 1.3%CVE-2022-45470HIGHApache Hama allows XSS and information disclosureEPSS 1.3%