Weaknesses of type CWE-20

5,842 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-2019-10191MEDIUMA vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attackers to downgrade DNSSEC-securEPSS 1.9%CVE-2024-46901LOWApache Subversion: mod_dav_svn denial-of-service via control characters in pathsEPSS 1.9%CVE-2020-3128HIGHCisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution VulnerabilitiesEPSS 1.9%CVE-2022-39312CRITICALDataease Mysql Data Source JDBC Connection Parameters Not Verified Leads to Deserialization VulnerabilityEPSS 1.9%CVE-2017-6792—A vulnerability in the batch provisioning feature in Cisco Prime Collaboration Provisioning Tool could allow an authenticated, remote attackEPSS 1.9%CVE-2019-1947HIGHCisco Email Security Appliance Denial of Service VulnerabilityEPSS 1.9%CVE-2020-27253—A flaw exists in the Ingress/Egress checks routine of FactoryTalk Linx Version 6.11 and prior. This vulnerability could allow a remote, unauEPSS 1.9%CVE-2018-1086MEDIUMpcs before versions 0.9.164 and 0.10 is vulnerable to a debug parameter removal bypass. REST interface of the pcsd service did not properly EPSS 1.9%CVE-2019-19298HIGHA vulnerability has been identified in SiNVR/SiVMS Video Server (All versions < V5.0.0), SiNVR/SiVMS Video Server (All versions >= V5.0.0 < EPSS 1.9%CVE-2024-4547CRITICALDelta Electronics DIAEnergie Unauthenticated SQL InjectionEPSS 1.9%CVE-2023-25693CRITICALSqoop Apache Airflow Provider Remote Code Execution VulnerabilityEPSS 1.9%CVE-2024-27894HIGHApache Pulsar: Pulsar Functions Worker Allows Unauthorized File Access and Unauthorized HTTP/HTTPS ProxyingEPSS 1.9%CVE-2026-32203HIGH.NET and Visual Studio Denial of Service VulnerabilityEPSS 1.9%CVE-2020-3172HIGHCisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service VulnerabilityEPSS 1.9%CVE-2020-2011HIGHPAN-OS: Panorama registration denial of serviceEPSS 1.9%CVE-2020-28591HIGHAn out-of-bounds read vulnerability exists in the AMF File AMFParserContext::endElement() functionality of Slic3r libslic3r 1.3.0 and MasterEPSS 1.9%CVE-2026-86679HIGHBroken Access Control vulnerabilityEPSS 1.9%CVE-2022-24828HIGHMissing input validation can lead to command execution in composerEPSS 1.9%CVE-2020-24679HIGHDenial of Service attack on Symphony PlusEPSS 1.9%CVE-2025-34056CRITICALAVTECH IP camera, DVR, and NVR Devices Authenticated Root Command ExecutionEPSS 1.9%