Weaknesses of type CWE-20

5,455 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-2026-13990MEDIUMInsufficient validation of untrusted input in DataTransfer in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who EPSS 0.3%CVE-2026-7998MEDIUMInsufficient validation of untrusted input in Dialog in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised tEPSS 0.3%CVE-2026-16415MEDIUMInsufficient validation of untrusted input in Extensions in Google Chrome prior to 150.0.7871.182 allowed a remote attacker to spoof the conEPSS 0.3%CVE-2023-52368MEDIUMInput verification vulnerability in the account module.Successful exploitation of this vulnerability may cause features to perform abnormallEPSS 0.3%CVE-2025-21126MEDIUMInDesign Desktop | Improper Input Validation (CWE-20)EPSS 0.3%CVE-2025-46340HIGHMisskey CSS Style Injection Vulnerability In `MkUrlPreview`EPSS 0.3%CVE-2024-29214HIGHImproper input validation in UEFI firmware CseVariableStorageSmm for some Intel(R) Processors may allow a privileged user to potentially enaEPSS 0.3%CVE-2024-28127HIGHImproper input validation in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privEPSS 0.3%CVE-2024-21452HIGHImproper Input Validation in Automotive TelematicsEPSS 0.3%CVE-2024-24582HIGHImproper input validation in XmlCli feature for UEFI firmware for some Intel(R) processors may allow privileged user to potentially enable eEPSS 0.3%CVE-2026-67326HIGHGitPython before 3.1.50 Newline Injection via config_writer sectionEPSS 0.3%CVE-2023-34440HIGHImproper input validation in UEFI firmware for some Intel(R) Processors may allow a privileged user to potentially enable escalation of privEPSS 0.3%CVE-2026-30963LOWCapsule Namespace Hijacking via subresourceEPSS 0.3%CVE-2025-61583MEDIUMTS3 Manager is vulnerable to unauthenticated reflected XSS attack due to insecure error handlingEPSS 0.3%CVE-2026-0051MEDIUMIn multiple functions of ubsan_throwing_runtime.cpp, there is a possible way to cause a system crash due to improper input validation. This EPSS 0.3%CVE-2024-23790LOWMissing file type check in avatar picture uploadEPSS 0.3%CVE-2021-35531—Remote Code Execution in TXpert Hub CoreTec 4EPSS 0.3%CVE-2025-13826HIGHIncorrect input validation on the Zervit portable HTTP/Web serverEPSS 0.3%CVE-2024-3938MEDIUMThe "reset password" login page accepted an HTML injection via URL parameters. This has already been rectified via patch, and as such it caEPSS 0.3%CVE-2025-41257MEDIUMSuprema BioStar 2 Insecure Password ChangeEPSS 0.3%