Weaknesses of type CWE-20

5,386 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-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-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-2020-6998MEDIUMRockwell Automation CompactLogix 5370 and ControlLogix 5570 Controllers Improper Input ValidationEPSS 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%CVE-2020-5243MEDIUMDenial of Service in uap-core when processing crafted User-Agent stringsEPSS 2.3%CVE-2024-5990HIGHThinManager® ThinServer™ Improper Input Validation VulnerabilityEPSS 2.3%CVE-2020-8349CRITICALAn internal security review has identified an unauthenticated remote code execution vulnerability in Cloud Networking Operating System (CNOSEPSS 2.2%CVE-2021-36032HIGHMagento Commerce Improper Input Validation Could Lead To Information Exposure and Privilege EscalationEPSS 2.2%CVE-2025-26647HIGHWindows Kerberos Elevation of Privilege VulnerabilityEPSS 2.2%CVE-2023-5043HIGHIngress nginx annotation injection causes arbitrary command executionEPSS 2.2%CVE-2019-1843HIGHCisco RV110W, RV130W, and RV215W Routers Management Interface Denial of Service VulnerabilityEPSS 2.2%CVE-2020-15098HIGHMissing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMSEPSS 2.2%CVE-2018-0113—A vulnerability in an operations script of Cisco UCS Central could allow an authenticated, remote attacker to execute arbitrary shell commanEPSS 2.2%CVE-2024-3177LOWBypassing mountable secrets policy imposed by the ServiceAccount admission pluginEPSS 2.2%CVE-2021-21408HIGHAccess to restricted PHP code by dynamic static class access in smartyEPSS 2.2%CVE-2025-29814CRITICALMicrosoft Partner Center Elevation of Privilege VulnerabilityEPSS 2.2%