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-2018-15424—Multiple Vulnerabilities in Cisco Identity Services EngineEPSS 1.4%CVE-2021-1260HIGHCisco SD-WAN Command Injection VulnerabilitiesEPSS 1.4%CVE-2021-1261HIGHCisco SD-WAN Command Injection VulnerabilitiesEPSS 1.4%CVE-2022-1053—Keylime does not enforce that the agent registrar data is the same when the tenant uses it for validation of the EK and identity quote and tEPSS 1.4%CVE-2026-59509CRITICALUnauthenticated arbitrary MongoDB collection read in cve-searchEPSS 1.4%CVE-2026-21893CRITICALn8n Vulnerable to Command Injection in Community Package InstallationEPSS 1.4%CVE-2020-15181CRITICALAdmin account takeover in Alfresco Reset PasswordEPSS 1.4%CVE-2026-48281CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.4%CVE-2017-12276—A vulnerability in the web framework code for the SQL database interface of the Cisco Prime Collaboration Provisioning application could allEPSS 1.4%CVE-2024-38265HIGHWindows Routing and Remote Access Service (RRAS) Remote Code Execution VulnerabilityEPSS 1.4%CVE-2024-20758CRITICALAdobe Commerce | Improper Input Validation (CWE-20)EPSS 1.4%CVE-2021-32635MEDIUMAction Commands (run/shell/exec) Against Library URIs Ignore Configured Remote EndpointEPSS 1.4%CVE-2019-15262HIGHCisco Wireless LAN Controller Secure Shell Denial of Service VulnerabilityEPSS 1.4%CVE-2023-22888—Apache Airflow: Scheduler remote DoSEPSS 1.4%CVE-2021-25746HIGHIngress-nginx directive injection via annotationsEPSS 1.4%CVE-2019-1921MEDIUMCisco Email Security Appliance Content Filter Bypass VulnerabilityEPSS 1.4%CVE-2019-1955MEDIUMCisco Email Security Appliance Header Injection VulnerabilityEPSS 1.4%CVE-2020-7839HIGHMarkAny MaEPSBroker Command Injection VulnerabilityEPSS 1.4%CVE-2021-39234—Raw block data can be read bypassing ACL/authorizationEPSS 1.4%CVE-2022-42012MEDIUMAn issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2. An authenticated attacker can caEPSS 1.4%