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-2021-25746HIGHIngress-nginx directive injection via annotationsEPSS 1.4%CVE-2024-34108CRITICALLarge attack surface through legit webhook usage in Adobe CommerceEPSS 1.4%CVE-2020-3321LOWCisco Webex Network Recording Player and Cisco Webex Player Denial of Service VulnerabilityEPSS 1.4%CVE-2021-37206—A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variantsEPSS 1.4%CVE-2018-15424—Multiple Vulnerabilities in Cisco Identity Services EngineEPSS 1.4%CVE-2023-49299HIGHApache DolphinScheduler: Arbitrary js execute as root for authenticated usersEPSS 1.4%CVE-2026-59509CRITICALUnauthenticated arbitrary MongoDB collection read in cve-searchEPSS 1.4%CVE-2021-44221—A vulnerability has been identified in SIMATIC eaSie Core Package (All versions < V22.00). The affected systems do not properly validate inpEPSS 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-2022-27634MEDIUMOn 16.1.x versions prior to 16.1.2.2 and 15.1.x versions prior to 15.1.5.1, BIG-IP APM does not properly validate configurations, allowing aEPSS 1.4%CVE-2024-20758CRITICALAdobe Commerce | Improper Input Validation (CWE-20)EPSS 1.4%CVE-2019-15262HIGHCisco Wireless LAN Controller Secure Shell Denial of Service VulnerabilityEPSS 1.4%CVE-2021-32635MEDIUMAction Commands (run/shell/exec) Against Library URIs Ignore Configured Remote EndpointEPSS 1.4%CVE-2020-3368MEDIUMCisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 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-2021-39234—Raw block data can be read bypassing ACL/authorizationEPSS 1.4%