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-2021-4210MEDIUMA potential vulnerability in the SMI callback function used in the NVME driver in some Lenovo Desktop, ThinkStation, and ThinkEdge models maEPSS 0.3%CVE-2024-7980HIGHInsufficient data validation in Installer in Google Chrome on Windows prior to 128.0.6613.84 allowed a local attacker to perform privilege eEPSS 0.3%CVE-2021-25401—Intent redirection vulnerability in Samsung Health prior to version 6.16 allows attacker to execute privileged action.EPSS 0.3%CVE-2021-4212MEDIUMA potential vulnerability in the SMI callback function used in the Legacy BIOS mode driver in some Lenovo Notebook models may allow an attacEPSS 0.3%CVE-2026-102823HIGHrussh: Client-side channel-scoped Handler callbacks fire for channel IDs the client never openedEPSS 0.3%CVE-2022-47924MEDIUMArbitrary Code Execution using the validate function of csaf-validator-libEPSS 0.3%CVE-2024-36284MEDIUMImproper input validation in some Intel(R) Neural Compressor software before version v3.0 may allow an authenticated user to potentially enaEPSS 0.3%CVE-2020-1986MEDIUMSecdo: Local authenticated users can cause Windows system crashEPSS 0.3%CVE-2025-14606LOWtiny-rdm Tiny RDM Pickle Decoding pickle_convert.go pickle.loads deserializationEPSS 0.3%CVE-2026-86351MEDIUMMISP User Homepage Validation Allows Authenticated Open Redirect via Protocol-Relative URLEPSS 0.3%CVE-2026-23841CRITICALMovary vulnerable to Cross-site Scripting with `?categoryCreated=` paramEPSS 0.3%CVE-2026-17773MEDIUMInsufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin daEPSS 0.3%CVE-2026-17706MEDIUMInsufficient validation of untrusted input in Media in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker who had comEPSS 0.3%CVE-2026-14116MEDIUMInsufficient validation of untrusted input in DevTools in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who convinced a useEPSS 0.3%CVE-2026-17700MEDIUMInsufficient validation of untrusted input in Actor in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised thEPSS 0.3%CVE-2026-8013MEDIUMInsufficient validation of untrusted input in FedCM in Google Chrome prior to 148.0.7778.96 allowed a remote attacker to leak cross-origin dEPSS 0.3%CVE-2026-14045MEDIUMInsufficient validation of untrusted input in Network in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised EPSS 0.3%CVE-2026-8538MEDIUMInsufficient validation of untrusted input in GPU in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised theEPSS 0.3%CVE-2026-17767MEDIUMInsufficient validation of untrusted input in WebView in Google Chrome on Android prior to 151.0.7922.72 allowed a remote attacker who had cEPSS 0.3%CVE-2026-17769MEDIUMInsufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin daEPSS 0.3%