Weaknesses of type CWE-20

5,887 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-2021-43448MEDIUMONLYOFFICE all versions as of 2021-11-08 is vulnerable to Improper Input Validation. A lack of input validation can allow an attacker to spoEPSS 1.0%CVE-2022-36362HIGHA vulnerability has been identified in LOGO! 12/24RCE (6ED1052-1MD08-0BA1) (All versions), LOGO! 12/24RCE (6ED1052-1MD08-0BA2) (All versionsEPSS 1.0%CVE-2020-1756—In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, insufficient input escaping was applied to the PHP unit webrunner admin tool.EPSS 1.0%CVE-2024-20684MEDIUMWindows Hyper-V Denial of Service VulnerabilityEPSS 1.0%CVE-2024-0710MEDIUMGP Unique ID <= 1.5.5 - Unauthenticated Form Submission Unique ID ModificationEPSS 1.0%CVE-2021-22678—Cscape (All versions prior to 9.90 SP4) lacks proper validation of user-supplied data when parsing project files. This could lead to memory EPSS 1.0%CVE-2020-15184LOWAliases are never checked in HelmEPSS 1.0%CVE-2020-2504MEDIUMAbsolute path traversal vulnerability in QESEPSS 1.0%CVE-2023-50694CRITICALAn issue in dom96 HTTPbeast v.0.4.1 and before allows a remote attacker to send a malicious crafted request due to insufficient parsing in tEPSS 1.0%CVE-2021-35370CRITICALAn issue found in Peacexie Imcat v5.4 allows attackers to execute arbitrary code via the incomplete filtering function.EPSS 1.0%CVE-2026-48315CRITICALColdFusion | Improper Input Validation (CWE-20)EPSS 1.0%CVE-2026-48334CRITICALIllustrator | Improper Input Validation (CWE-20)EPSS 1.0%CVE-2023-29255HIGHIBM DB2 for Linux, UNIX and Windows denial of serviceEPSS 1.0%CVE-2023-26021HIGHIBM Db2 denial of serviceEPSS 1.0%CVE-2022-43566HIGHRisky command safeguards bypass via Search ID query in Analytics Workspace in Splunk EnterpriseEPSS 1.0%CVE-2024-2257CRITICALPassword Policy Bypass Vulnerability in Digisol RouterEPSS 1.0%CVE-2020-15194MEDIUMDenial of Service in TensorflowEPSS 1.0%CVE-2021-21510MEDIUMDell iDRAC8 versions prior to 2.75.100.75 contain a host header injection vulnerability. A remote unauthenticated attacker may potentially eEPSS 1.0%CVE-2023-4551HIGHCommand Injection via Task SchedulerEPSS 1.0%CVE-2025-43401HIGHA denial-of-service issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS TaEPSS 1.0%