Weaknesses of type CWE-20

5,367 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-2017-6763—A vulnerability in the implementation of the H.264 protocol in Cisco Meeting Server (CMS) 2.1.4 could allow an unauthenticated, remote attacEPSS 2.3%CVE-2026-47928CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 2.3%CVE-2022-28129—Insufficient Validation of HTTP/1.x HeadersEPSS 2.3%CVE-2020-3127HIGHCisco Webex Network Recording Player and Cisco Webex Player Arbitrary Code Execution VulnerabilitiesEPSS 2.3%CVE-2018-18999—WebAccess/SCADA, WebAccess/SCADA Version 8.3.2 installed on Windows 2008 R2 SP1. Lack of proper validation of user supplied input may allow EPSS 2.3%CVE-2024-20670HIGHOutlook for Windows Spoofing VulnerabilityEPSS 2.3%CVE-2011-4124—Input validation issues were found in Calibre at devices/linux_mount_helper.c which can lead to argument injection and elevation of privilegEPSS 2.3%CVE-2018-0139—A vulnerability in the Interactive Voice Response (IVR) management connection interface for Cisco Unified Customer Voice Portal (CVP) could EPSS 2.3%CVE-2019-1711MEDIUMCisco IOS XR gRPC Software Denial of Service VulnerabilityEPSS 2.3%CVE-2018-0260—A vulnerability in the web interface of Cisco MATE Live could allow an unauthenticated, remote attacker to view and download the contents ofEPSS 2.3%CVE-2022-31780—HTTP/2 framing vulnerabilitiesEPSS 2.3%CVE-2021-3482—A flaw was found in Exiv2 in versions before and including 0.27.4-RC1. Improper input validation of the rawData.size property in Jp2Image::rEPSS 2.3%CVE-2020-10693MEDIUMA flaw was found in Hibernate Validator version 6.1.2.Final. A bug in the message interpolation processor enables invalid EL expressions to EPSS 2.3%CVE-2021-36030HIGHMagento Commerce Improper Input Validation During Checkout Process Could Lead To Privilege EscalationEPSS 2.3%CVE-2025-32706HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 2.3%KEVCVE-2018-15453HIGHCisco Email Security Appliance Memory Corruption Denial of Service VulnerabilityEPSS 2.3%CVE-2018-8869—In Lantech IDS 2102 2.0 and prior, nearly all input fields allow for arbitrary input on the device. A CVSS v3 base score of 9.8 has been calEPSS 2.3%CVE-2023-39553HIGHApache Airflow Drill Provider Arbitrary File Read VulnerabilityEPSS 2.3%CVE-2020-3147HIGHCisco Small Business Switches Denial of Service VulnerabilityEPSS 2.3%CVE-2024-1372CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.3%