Weaknesses of type CWE-20

5,416 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-2026-93952CRITICALSecurity Advisory 0183EPSS 0.9%KEVCVE-2021-40365HIGHAffected devices don't process correctly certain special crafted packets sent to port 102/tcp, which could allow an attacker to cause a deniEPSS 0.9%CVE-2022-29257MEDIUMElectron's AutoUpdater module fails to validate certain nested components of the bundleEPSS 0.9%CVE-2023-0359MEDIUMipv6: Missing ipv6 nullptr-check in handle_ra_inputEPSS 0.9%CVE-2024-26173HIGHWindows Kernel Elevation of Privilege VulnerabilityEPSS 0.9%CVE-2024-55952HIGHDataease Redshift Data Source JDBC Connection Parameters Not Verified Leads to RCE VulnerabilityEPSS 0.9%CVE-2025-43347CRITICALThis issue was addressed by removing the vulnerable code. This issue is fixed in iOS 26 and iPadOS 26, macOS Tahoe 26, tvOS 26, visionOS 26,EPSS 0.9%CVE-2024-38311MEDIUMApache Traffic Server: Request smuggling via pipelining after a chunked message bodyEPSS 0.9%CVE-2021-37707MEDIUMManipulation of product reviews via APIEPSS 0.9%CVE-2024-45798CRITICALMultiple Poisoned Pipeline Execution (PPE) vulnerabilitiesEPSS 0.9%CVE-2022-38778MEDIUMA flaw (CVE-2022-38900) was discovered in one of Kibana’s third party dependencies, that could allow an authenticated user to perform a requEPSS 0.9%CVE-2020-1676HIGHJuniper Networks Mist Cloud UI: SAML authentication response handling vulnerability.EPSS 0.9%CVE-2022-4504HIGHImproper Input Validation in openemr/openemrEPSS 0.9%CVE-2022-26108—When a user opens a manipulated Picture Exchange (.pcx, 2d.x3d) received from untrusted sources in SAP 3D Visual Enterprise Viewer - versionEPSS 0.9%CVE-2022-22537—When a user opens a manipulated Tagged Image File Format (.tiff, 2d.x3d)) received from untrusted sources in SAP 3D Visual Enterprise ViewerEPSS 0.9%CVE-2023-34317MEDIUMAn improper input validation vulnerability exists in the OAS Engine User Creation functionality of Open Automation Software OAS Platform v18EPSS 0.9%CVE-2026-45505HIGHApache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Jolokia `addNetworkConnector` Discovery Wrapper BypassEPSS 0.9%CVE-2023-40034HIGHRepositoty takeover in woodpecker-ciEPSS 0.9%CVE-2025-63213CRITICALThe QVidium Opera11 device (firmware version 2.9.0-Ax4x-opera11) is vulnerable to Remote Code Execution (RCE) due to improper input validatiEPSS 0.9%CVE-2023-49081HIGHaiohttp's ClientSession is vulnerable to CRLF injection via versionEPSS 0.9%