Weaknesses of type CWE-20

5,393 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-2021-36048HIGHXMP Toolkit SDK Improper Input Validation Could Lead To Arbitrary Code ExecutionEPSS 2.7%CVE-2021-36047HIGHXMP Toolkit SDK Improper Input Validation Could Lead To Arbitrary Code ExecutionEPSS 2.7%CVE-2021-3580—A flaw was found in the way nettle's RSA decryption functions handled specially crafted ciphertext. An attacker could use this flaw to proviEPSS 2.7%CVE-2020-6656MEDIUMFile parsing Type Confusion Remote code execution vulerabilityEPSS 2.7%CVE-2021-32974CRITICALMoxa NPort IAW5000A-I/O Series Serial Device Server Improper Input ValidationEPSS 2.7%CVE-2025-21230HIGHMicrosoft Message Queuing (MSMQ) Denial of Service VulnerabilityEPSS 2.7%CVE-2022-24720CRITICALImproper Input Validation in image_processingEPSS 2.7%CVE-2018-0136—A vulnerability in the IPv6 subsystem of Cisco IOS XR Software Release 5.3.4 for the Cisco Aggregation Services Router (ASR) 9000 Series couEPSS 2.7%CVE-2018-10899HIGHA flaw was found in Jolokia versions from 1.2 to before 1.6.1. Affected versions are vulnerable to a system-wide CSRF. This holds true for pEPSS 2.7%CVE-2020-26243HIGHMemory leak in nanopbEPSS 2.7%CVE-2022-40898HIGHAn issue discovered in Python Packaging Authority (PyPA) Wheel 0.37.1 and earlier allows remote attackers to cause a denial of service via aEPSS 2.7%CVE-2018-14661MEDIUMIt was found that usage of snprintf function in feature/locks translator of glusterfs server 3.8.4, as shipped with Red Hat Gluster Storage,EPSS 2.7%CVE-2024-5988CRITICALRockwell Automation ThinManager® ThinServer™ Improper Input Validation VulnerabilityEPSS 2.7%CVE-2020-6655MEDIUMFile parsing Out-Of-Bounds read remote code executionEPSS 2.7%CVE-2018-0112—A vulnerability in Cisco WebEx Business Suite clients, Cisco WebEx Meetings, and Cisco WebEx Meetings Server could allow an authenticated, rEPSS 2.6%CVE-2018-0090—A vulnerability in management interface access control list (ACL) configuration of Cisco NX-OS System Software could allow an unauthenticateEPSS 2.6%CVE-2019-1712MEDIUMCisco IOS XR Software Protocol Independent Multicast Denial of Service VulnerabilityEPSS 2.6%CVE-2017-6619—A vulnerability in the web-based GUI of Cisco Integrated Management Controller (IMC) 3.0(1c) could allow an authenticated, remote attacker tEPSS 2.6%CVE-2021-33012HIGHRockwell Automation MicroLogix 1100, all versions, allows a remote, unauthenticated attacker sending specially crafted commands to cause theEPSS 2.6%CVE-2024-1374CRITICALCommand injection vulnerability was identified in GitHub Enterprise Server that allowed privilege escalation in the Mangement ConsoleEPSS 2.6%