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-2021-43588MEDIUMDell EMC Data Protection Central version 19.5 contains an Improper Input Validation Vulnerability. A remote unauthenticated attacker could pEPSS 1.2%CVE-2022-3752HIGHRockwell Automation GuardLogix and ControlLogix controllers Vulnerable to Denial-Of-Service AttackEPSS 1.2%CVE-2021-41114MEDIUMHTTP Host Header Injection in Request Handling in Typo3EPSS 1.2%CVE-2021-4204—An out-of-bounds (OOB) memory access flaw was found in the Linux kernel's eBPF due to an Improper Input Validation. This flaw allows a localEPSS 1.2%CVE-2022-43515MEDIUMX-Forwarded-For header is active by default causes access to Zabbix sites in maintenance modeEPSS 1.2%CVE-2022-25885HIGHDenial of Service (DoS)EPSS 1.2%CVE-2026-82008CRITICALAdobe Campaign Classic (ACC) | Improper Input Validation (CWE-20)EPSS 1.2%CVE-2022-46363HIGHApache CXF directory listing / code exfiltrationEPSS 1.2%CVE-2019-3760MEDIUMThe RSA Identity Governance and Lifecycle software and RSA Via Lifecycle and Governance products prior to 7.1.0 P08 contain a SQL Injection EPSS 1.2%CVE-2020-3478HIGHCisco Enterprise NFV Infrastructure Software File Overwrite VulnerabilityEPSS 1.2%CVE-2020-3345MEDIUMCisco Webex Meetings and Cisco Webex Meetings Server HTML Injection VulnerabilityEPSS 1.2%CVE-2023-6245HIGHInfinite decoding loop through specially crafted payloadEPSS 1.2%CVE-2022-28763HIGHImproper URL parsing in Zoom ClientsEPSS 1.2%CVE-2018-10616—ABB Panel Builder 800 all versions has an improper input validation vulnerability which may allow an attacker to insert and run arbitrary coEPSS 1.2%CVE-2018-1078—OpenDayLight version Carbon SR3 and earlier contain a vulnerability during node reconciliation that can result in traffic flows that should EPSS 1.2%CVE-2021-44406HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44389HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44396HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44395HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%CVE-2021-44399HIGHA denial of service vulnerability exists in the cgiserver.cgi JSON command parser functionality of reolink RLC-410W v3.0.0.136_20121102. A sEPSS 1.2%