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-2022-31020HIGHRemote code execution in Indy's NODE_UPGRADE transactionEPSS 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-2021-35995LOWAdobe After Effects MP4 File Parsing Uninitialized Variable Information Disclosure VulnerabilityEPSS 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-2025-26647HIGHWindows Kerberos Elevation of Privilege VulnerabilityEPSS 2.3%CVE-2019-1711MEDIUMCisco IOS XR gRPC Software Denial of Service VulnerabilityEPSS 2.3%CVE-2021-36030HIGHMagento Commerce Improper Input Validation During Checkout Process Could Lead To Privilege EscalationEPSS 2.3%CVE-2020-5243MEDIUMDenial of Service in uap-core when processing crafted User-Agent stringsEPSS 2.3%CVE-2018-15453HIGHCisco Email Security Appliance Memory Corruption Denial of Service VulnerabilityEPSS 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-2022-42837CRITICALAn issue existed in the parsing of URLs. This issue was addressed with improved input validation. This issue is fixed in iOS 16.2 and iPadOSEPSS 2.3%CVE-2024-1372CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.3%CVE-2024-1369CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.3%CVE-2024-1359CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.3%CVE-2020-7526—Improper Input Validation vulnerability exists in PowerChute Business Edition (software V9.0.x and earlier) which could cause remote code exEPSS 2.3%CVE-2018-0369—A vulnerability in the reassembly logic for fragmented IPv4 packets of Cisco StarOS running on virtual platforms could allow an unauthenticaEPSS 2.3%CVE-2019-3581HIGHMcAfee Web Gateway denial of service attack due to Improper Input ValidationEPSS 2.3%CVE-2019-1691MEDIUMCisco Firepower Threat Defense Software SSL or TLS Denial of Service VulnerabilityEPSS 2.3%CVE-2020-8255—A vulnerability in the Pulse Connect Secure < 9.1R9 admin web interface could allow an authenticated attacker to perform an arbitrary file rEPSS 2.3%