Weaknesses of type CWE-20

5,429 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-2026-54208HIGHTeamDavid: Arbitrary File Write leading to Stored XSSEPSS 0.5%CVE-2023-47705MEDIUMIBM Security Guardium Key Lifecycle Manager improper input validationEPSS 0.5%CVE-2025-1113MEDIUMtaisan tarzan-cms Add Theme admin#themes upload deserializationEPSS 0.5%CVE-2026-69106HIGHPotential cache poisoning in JFrog ArtifactoryEPSS 0.5%CVE-2025-43372MEDIUMThe issue was addressed with improved input validation. This issue is fixed in iOS 26 and iPadOS 26, macOS Sonoma 14.8.2, macOS Tahoe 26, tvEPSS 0.5%CVE-2026-16793HIGHRemote Command Injection via OS Profile Password in Lenovo XClarity OrchestratorEPSS 0.5%CVE-2025-3898HIGHCWE-20: Improper Input Validation vulnerability exists that could cause Denial of Service when an authenticated malicious user sends HTTPS rEPSS 0.5%CVE-2025-30080HIGHSignalling in Pexip Infinity 29 through 36.2 before 37.0 has improper input validation that allows remote attackers to trigger a temporary dEPSS 0.5%CVE-2023-0779MEDIUMnet: shell: Improper input validationEPSS 0.5%CVE-2026-2880HIGH@fastify/middie has an improper path normalization vulnerabilityEPSS 0.5%CVE-2025-48944MEDIUMvLLM Tool Schema allows DoS via Malformed pattern and type FieldsEPSS 0.5%CVE-2026-24734HIGHApache Tomcat Native, Apache Tomcat: OCSP revocation bypassEPSS 0.5%CVE-2024-45825HIGH5015-U8IHFT Denial-of-Service Vulnerability via CIP MessageEPSS 0.5%CVE-2024-7515HIGHRockwell Automation ControlLogix/GuardLogix 5580 and CompactLogix/Compact GuardLogix® 5380 Controller Denial-of-Service Vulnerability via Input ValidationEPSS 0.5%CVE-2024-26290HIGHAuthenticated Remote Command Injection affecting Avid NEXISEPSS 0.5%CVE-2026-14631MEDIUMwebpack-dev-server vulnerable to denial of service via a malformed Host or Origin headerEPSS 0.5%CVE-2026-45392HIGHDOM-based XSS in Cribl StreamEPSS 0.5%CVE-2024-37777HIGHO2OA v9.0.3 was discovered to contain a remote code execution (RCE) vulnerability via the mainOutput() function.EPSS 0.5%CVE-2024-22165MEDIUMDenial of Service in Splunk Enterprise Security of the Investigations manager through Investigation creationEPSS 0.5%CVE-2026-8759MEDIUMxiandafu beetl SpELFunction SpELFunction.java expression language injectionEPSS 0.5%