Weaknesses of type CWE-20

5,399 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-2023-2454HIGHschema_element defeats protective search_path changes; It was found that certain database calls in PostgreSQL could permit an authed attackeEPSS 1.2%CVE-2021-39193MEDIUMTransaction validity oversight in pallet-ethereumEPSS 1.2%CVE-2025-64986HIGHCommand Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort InstructionEPSS 1.2%CVE-2023-35619MEDIUMMicrosoft Outlook for Mac Spoofing VulnerabilityEPSS 1.2%CVE-2018-10908MEDIUMIt was found that vdsm before version 4.20.37 invokes qemu-img on untrusted inputs without limiting resources. By uploading a specially crafEPSS 1.2%CVE-2018-15632HIGHImproper input validation in database creation logic in Odoo Community 11.0 and earlier and Odoo Enterprise 11.0 and earlier, allows remote EPSS 1.2%CVE-2023-28330MEDIUMMoodle: authenticated arbitrary file read through malformed backup fileEPSS 1.2%CVE-2025-30355HIGHSynapse vulnerable to federation denial of service via malformed eventsEPSS 1.2%CVE-2026-0404MEDIUMInsufficient input validation in NETGEAR Orbi routersEPSS 1.2%CVE-2020-7823HIGHDaviewIndy Multiple VulnerabilitiesEPSS 1.2%CVE-2024-31867MEDIUMApache Zeppelin: LDAP search filter query Injection VulnerabilityEPSS 1.2%CVE-2023-6879CRITICALheap buffer overflow in libaomEPSS 1.2%CVE-2024-29831HIGHApache DolphinScheduler: RCE by arbitrary js executionEPSS 1.2%CVE-2023-29335HIGHMicrosoft Word Security Feature Bypass VulnerabilityEPSS 1.2%CVE-2022-24711CRITICALRemote CLI Command Execution Vulnerability in CodeIgniter4EPSS 1.2%CVE-2024-8755HIGHImproper Input Validation vulnerability of Authenticated User in Progress LoadMaster allows : OS Command Injection.EPSS 1.2%CVE-2017-12297—A vulnerability in Cisco WebEx Meeting Center could allow an authenticated, remote attacker to initiate connections to arbitrary hosts, aka EPSS 1.2%CVE-2020-7803HIGHZoneplayer ActiveX File Download VulnerabilityEPSS 1.2%CVE-2020-7822HIGHDaviewIndy Multiple VulnerabilitiesEPSS 1.2%CVE-2025-31281CRITICALAn input validation issue was addressed with improved memory handling. This issue is fixed in iOS 18.6 and iPadOS 18.6, macOS Sequoia 15.6, EPSS 1.2%