Weaknesses of type CWE-20

5,847 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-2021-32642HIGHMissing input validation in dynamic discovery example scripts.EPSS 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-2021-1464MEDIUMCisco SD-WAN vManage Authorization Bypass VulnerabilityEPSS 1.3%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 1.3%CVE-2025-12543CRITICALUndertow-core: undertow http server fails to reject malformed host headers leading to potential cache poisoning and ssrfEPSS 1.3%CVE-2020-8568MEDIUMKubernetes Secrets Store CSI Driver sync/rotate directory traversalEPSS 1.3%CVE-2021-42787CRITICALDirectory Traversal Write/Delete/Partial Read at AgentConfigurationServletEPSS 1.3%CVE-2022-22241HIGHJunos OS: Vulnerability in J-Web may allow deserialization without authenticationEPSS 1.3%CVE-2022-47894MEDIUMApache Zeppelin SAP: connecting to a malicious SAP server allowed it to perform XXEEPSS 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-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-2022-21646HIGHLookup operations do not take into account wildcards in SpiceDBEPSS 1.3%CVE-2019-19337MEDIUMA flaw was found in Red Hat Ceph Storage version 3 in the way the Ceph RADOS Gateway daemon handles S3 requests. An authenticated attacker cEPSS 1.3%CVE-2011-10020HIGHKaillera 0.86 Server DoS via Malformed UDP PacketEPSS 1.3%CVE-2020-15170HIGHMissing access control in apollo-adminserviceEPSS 1.3%CVE-2023-24807HIGHUndici vulnerable to Regular Expression Denial of Service in HeadersEPSS 1.3%CVE-2024-32007HIGHApache CXF Denial of Service vulnerability in JOSEEPSS 1.3%