Weaknesses of type CWE-20

5,450 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-2024-1714HIGHAccess Request for Entitlement Values with Leading/Trailing WhitespaceEPSS 0.3%CVE-2024-1244CRITICALRemote code execution and local privilege escalation due to UNC access and NetNTLMv2 hash theftEPSS 0.3%CVE-2026-47181HIGHPenguinMod-BackendApi: NoSQL Injection in Password Reset Endpoint Allows Account TakeoverEPSS 0.3%CVE-2025-47096LOWAdobe Experience Manager | Improper Input Validation (CWE-20)EPSS 0.3%CVE-2020-35509MEDIUMA flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticatoEPSS 0.3%CVE-2026-6779MEDIUMOther issue in the JavaScript Engine componentEPSS 0.3%CVE-2025-40846HIGHHaloITSM open redirect via the returnUrlEPSS 0.3%CVE-2026-65645MEDIUMRocket.Chat in versions before 8.8.0, 8.7.1, 8.6.2, 8.5.3, 8.4.6. 8.3.8, 8.2.8, 8.1.8, and 7.10.15, the Meteor DDP methods getThreadsList anEPSS 0.3%CVE-2023-42431LOWPotential XSS on user preferences pageEPSS 0.3%CVE-2022-29192MEDIUMMissing validation crashes `QuantizeAndDequantizeV4Grad` in TensorFlowEPSS 0.3%CVE-2026-22615MEDIUMDue to improper input validation in one of the Eaton Intelligent Power Protector (IPP) XML, it is possible for an attacker with admin privilEPSS 0.3%CVE-2026-17795MEDIUMInappropriate implementation in GetUserMedia in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the rendeEPSS 0.3%CVE-2026-63428MEDIUMHeyForm: completeSubmission persists submitter-supplied hidden fields verbatim without validating against the form's declared hidden-field setEPSS 0.3%CVE-2023-21596HIGHAdobe InCopy Improper Input Validation Remote Code Execution VulnerabilityEPSS 0.3%CVE-2023-25651MEDIUMSQL Injection Vulnerability in Some ZTE Mobile Internet ProductsEPSS 0.3%CVE-2025-12285CRITICALMissing Initial Password ChangeEPSS 0.3%CVE-2026-24811CRITICALAn improper pointer arithmetic in root-project/root at builtins/zlib/inffast.cEPSS 0.3%CVE-2026-100177MEDIUMAil Framework Crawler: Missing Cookiejar Authorization Check Allows Cross-Organization Cookiejar AttachmentEPSS 0.3%CVE-2024-35384MEDIUMAn issue in Cesanta mjs 2.20.0 allows a remote attacker to cause a denial of service via the mjs_array_length function in the mjs.c file.EPSS 0.3%CVE-2022-29206MEDIUMMissing validation results in undefined behavior in `SparseTensorDenseAdd` in TensorFlowEPSS 0.3%