Weaknesses of type CWE-20

5,888 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-2023-47141MEDIUMIBM Db2 denial of serviceEPSS 0.7%CVE-2026-53551MEDIUMfree5GC AUSF: null byte injection in supiOrSuci causes HTTP 500 internal service failureEPSS 0.7%CVE-2022-34844MEDIUMBIG-IP and BIG-IQ AWS vulnerability CVE-2022-34844EPSS 0.7%CVE-2026-48188CRITICALSQL Injection via MySQL Quote MethodEPSS 0.7%CVE-2023-36674—An issue was discovered in MediaWiki before 1.35.11, 1.36.x through 1.38.x before 1.38.7, 1.39.x before 1.39.4, and 1.40.x before 1.40.1. ItEPSS 0.7%CVE-2026-106626CRITICALAdobe Experience Manager | Improper Input Validation (CWE-20)EPSS 0.7%CVE-2022-30233MEDIUMA CWE-20: Improper Input Validation vulnerability exists that could allow the product to be maliciously manipulated when the user is trickedEPSS 0.7%CVE-2024-12138MEDIUMhorilla create_skills deserializationEPSS 0.7%CVE-2024-22119MEDIUMStored XSS in graph items select formEPSS 0.7%CVE-2024-47179HIGHRSSHub's `docker-test-cont.yml` workflow is vulnerable to Artifact Poisoning which may lead to a full repository takeover.EPSS 0.7%CVE-2025-59250HIGHJDBC Driver for SQL Server Spoofing VulnerabilityEPSS 0.7%CVE-2026-50628CRITICALApache CXF: OAuth2: Inverted IP Binding Check Defeats Security ControlEPSS 0.7%CVE-2024-49361HIGHPotential Vulnerability in ACON Library: Improper Input Validation Leading to Malicious Code ExecutionEPSS 0.7%CVE-2022-41733MEDIUMIBM InfoSphere Information Server denial of serviceEPSS 0.7%CVE-2026-24713CRITICALApache IoTDB: JEXL Expression Injection VulnerabilityEPSS 0.7%CVE-2026-91932CRITICALFlowise before 3.1.4 Remote Code Execution via cwd ParameterEPSS 0.7%CVE-2026-2970LOWdatapizza-labs datapizza-ai cache.py RedisCache deserializationEPSS 0.7%CVE-2026-40920CRITICALApache Ranger: Privilege Escalation via URL ParameterEPSS 0.7%CVE-2026-48204CRITICALApache Camel: Camel-MongoDB-GridFS: The gridfs.* control headers used non-Camel-prefixed names that bypass the HTTP header filter, allowing an HTTP client to switch the GridFS operation - including destructive file deletion - in the default configurationEPSS 0.7%CVE-2023-27488MEDIUMEnvoy gRPC client produces invalid protobuf when an HTTP header with non-UTF8 value is received.EPSS 0.7%