Weaknesses of type CWE-20

5,430 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-2021-33114MEDIUMImproper input validation for some Intel(R) PROSet/Wireless WiFi in multiple operating systems and Killer(TM) WiFi in Windows 10 and 11 may EPSS 0.5%CVE-2026-5174HIGHImproper Access Control Vulnerability in Progress MOVEit AutomationEPSS 0.5%CVE-2026-26935MEDIUMImproper Input Validation in Kibana Leading to Denial of ServiceEPSS 0.5%CVE-2018-1099—DNS rebinding vulnerability found in etcd 3.3.1 and earlier. An attacker can control his DNS records to direct to localhost, and trick the bEPSS 0.5%CVE-2017-7517LOWAn input validation vulnerability exists in Openshift Enterprise due to a 1:1 mapping of tenants in Hawkular Metrics and projects/namespacesEPSS 0.5%CVE-2026-45723LOWOmni: Operator can traverse image-factory API paths via unsanitized `talos_version` in CreateSchematicEPSS 0.5%CVE-2026-46910CRITICALVulnerability in the JD Edwards EnterpriseOne Tools product of Oracle JD Edwards (component: Enterprise Infrastructure Security). SupportedEPSS 0.5%CVE-2026-77710MEDIUMSTIX2 Parser Confusion and Mass Assignment Allow Unauthorized MISP Attribute Metadata Injection in misp-stix libraryEPSS 0.5%CVE-2022-35966MEDIUMSegfault in `QuantizedAvgPool` in TensorFlowEPSS 0.5%CVE-2022-3429MEDIUMA denial-of-service vulnerability was found in the firmware used in Lenovo printers, where users send illegal or malformed strings to an opeEPSS 0.5%CVE-2022-35972MEDIUMSegfault in `QuantizedBiasAdd` in TensorFlowEPSS 0.5%CVE-2022-48605—Input verification vulnerability in the fingerprint module. Successful exploitation of this vulnerability will affect confidentiality, integEPSS 0.5%CVE-2026-49475HIGHFreeSWITCH: Out-of-bounds memory access in core STUN attribute parsingEPSS 0.5%CVE-2023-34422MEDIUMA valid, authenticated LXCA user with elevated privileges may be able to delete folders in the LXCA filesystem through a specifically crafteEPSS 0.5%CVE-2022-35964MEDIUMSegfault in `BlockLSTMGradV2` in TensorFlowEPSS 0.5%CVE-2026-30078HIGHOpenAirInterface V2.2.0 AMF crashes when it receives an NGAP message with invalid procedure code or invalid PDU-type. For example when the mEPSS 0.5%CVE-2023-34421MEDIUMA valid, authenticated LXCA user with elevated privileges may be able to replace filesystem data through a specifically crafted web API callEPSS 0.5%CVE-2022-35967MEDIUMSegfault in `QuantizedAdd` in TensorFlowEPSS 0.5%CVE-2024-21978MEDIUMImproper input validation in SEV-SNP could allow a malicious hypervisor to read or overwrite guest memory potentially leading to data leakagEPSS 0.5%CVE-2025-6444MEDIUMServiceStack GetErrorResponse Improper Input Validation NTLM Relay VulnerabilityEPSS 0.5%