Weaknesses of type CWE-20

5,386 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-2017-3792—A vulnerability in a proprietary device driver in the kernel of Cisco TelePresence Multipoint Control Unit (MCU) Software could allow an unaEPSS 6.8%CVE-2023-28274HIGHWindows Win32k Elevation of Privilege VulnerabilityEPSS 6.8%CVE-2025-14156CRITICALFox LMS – WordPress LMS Plugin 1.0.4.7 - 1.0.5.1 - Unauthenticated Privilege Escalation via 'createOrder'EPSS 6.8%CVE-2025-62507HIGHRedis: Bug in XACKDEL may lead to stack overflow and potential RCEEPSS 6.8%CVE-2024-26170HIGHWindows Composite Image File System (CimFS) Elevation of Privilege VulnerabilityEPSS 6.6%CVE-2018-16875MEDIUMThe crypto/x509 package of Go before 1.10.6 and 1.11.x before 1.11.3 does not limit the amount of work performed for each chain verificationEPSS 6.4%CVE-2016-7072MEDIUMAn issue has been found in PowerDNS Authoritative Server before 3.4.11 and 4.0.2 allowing a remote, unauthenticated attacker to cause a deniEPSS 6.3%CVE-2026-3288HIGHingress-nginx rewrite-target nginx configuration injectionEPSS 6.3%CVE-2024-56132HIGHImproper Input Validation vulnerability of Authenticated User in Progress LoadMaster allows : OS Command Injection.EPSS 6.3%CVE-2025-14558HIGHRemote code execution via ND6 Router AdvertisementsEPSS 6.3%CVE-2021-22924LOWlibcurl keeps previously used connections in a connection pool for subsequenttransfers to reuse, if one of them matches the setup.Due to errEPSS 6.3%CVE-2016-8624MEDIUMcurl before version 7.51.0 doesn't parse the authority component of the URL correctly when the host name part ends with a '#' character, andEPSS 6.3%CVE-2024-38244HIGHKernel Streaming Service Driver Elevation of Privilege VulnerabilityEPSS 6.2%CVE-2024-56131HIGHImproper Input Validation vulnerability of Authenticated User in Progress LoadMaster allows : OS Command Injection.EPSS 6.1%CVE-2018-5474—Philips Intellispace Portal all versions 7.0.x and 8.0.x have an input validation vulnerability that could allow a remote attacker to executEPSS 6.1%CVE-2024-38241HIGHKernel Streaming Service Driver Elevation of Privilege VulnerabilityEPSS 6.0%CVE-2024-30188HIGHApache DolphinScheduler: Resource File Read And Write VulnerabilityEPSS 6.0%CVE-2020-14343—A vulnerability was discovered in the PyYAML library in versions before 5.4, where it is susceptible to arbitrary code execution when it proEPSS 6.0%CVE-2024-27135HIGHApache Pulsar: Improper Input Validation in Pulsar Function Worker allows Remote Code ExecutionEPSS 6.0%CVE-2024-38196HIGHWindows Common Log File System Driver Elevation of Privilege VulnerabilityEPSS 6.0%