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-2024-52579MEDIUMServer-Side Request Forgery vulnerability in various APIs in MisskeyEPSS 0.2%CVE-2026-7947MEDIUMInsufficient validation of untrusted input in Network in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised EPSS 0.2%CVE-2026-21500MEDIUMStack Overflow in iccDEV XML Calculator Macro ExpansionEPSS 0.2%CVE-2023-6381LOWImproper input validation in Newsletter Software SuperMailerEPSS 0.2%CVE-2023-20960HIGHIn launchDeepLinkIntentToRight of SettingsHomepageActivity.java, there is a possible way to launch arbitrary activities due to improper inpuEPSS 0.2%CVE-2026-14083MEDIUMInsufficient validation of untrusted input in HTML in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to inject arbitrary scrEPSS 0.2%CVE-2023-49615HIGHImproper input validation in some Intel(R) System Security Report and System Resources Defense firmware may allow a privileged user to potenEPSS 0.2%CVE-2026-75975HIGHfast-uri vulnerable to server-side request forgery via malformed IPv6 normalizationEPSS 0.2%CVE-2023-27519MEDIUMImproper input validation in firmware for some Intel(R) Optane(TM) SSD products may allow a privileged user to potentially enable escalationEPSS 0.2%CVE-2024-23678HIGHDeserialization of Untrusted Data on Splunk Enterprise for Windows through Path Traversal from Separate Disk PartitionEPSS 0.2%CVE-2025-53502MEDIUMHTML injection in FeaturedFeedsEPSS 0.2%CVE-2026-8010MEDIUMInsufficient validation of untrusted input in SiteIsolation in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had comproEPSS 0.2%CVE-2025-41378MEDIUMInjection vulnerability in Iridium Certus 700EPSS 0.2%CVE-2021-26325—Insufficient input validation in the SNP_GUEST_REQUEST command may lead to a potential data abort error and a denial of service.EPSS 0.2%CVE-2026-0410LOWInsufficient input validation in certain NETGEAR routersEPSS 0.2%CVE-2022-28791MEDIUMImproper input validation vulnerability in InstallAgent in Galaxy Store prior to version 4.5.41.8 allows attacker to overwrite files stored EPSS 0.2%CVE-2021-3038MEDIUMGlobalProtect App: Windows VPN kernel driver denial of service (DoS)EPSS 0.2%CVE-2024-21949MEDIUMImproper validation of user input in the NPU driver could allow an attacker to provide a buffer with unexpected size, potentially leading toEPSS 0.2%CVE-2026-14135MEDIUMInsufficient validation of untrusted input in Network in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised EPSS 0.2%CVE-2026-79025MEDIUMImproper input validation in Workers in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer procEPSS 0.2%