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-2024-24695MEDIUM Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows - Improper Input ValidationEPSS 0.8%CVE-2022-24037HIGHUnauthorized modification in Karmasis Informatics Infraskope SIEM+EPSS 0.8%CVE-2023-36872MEDIUMVP9 Video Extensions Information Disclosure VulnerabilityEPSS 0.8%CVE-2021-31375HIGHJunos OS: Receipt of a specific BGP update may cause RPKI policy-checks to be bypassedEPSS 0.8%CVE-2023-26367MEDIUMError based file extraction via PHP filter chains during product bulk import logicEPSS 0.8%CVE-2021-21533MEDIUMWyse Management Suite versions up to 3.2 contains a vulnerability wherein a malicious authenticated user can cause a denial of service in thEPSS 0.8%CVE-2020-1727MEDIUMA vulnerability was found in Keycloak before 9.0.2, where every Authorization URL that points to an IDP server lacks proper input validationEPSS 0.8%CVE-2020-16099MEDIUMIn Gallagher Command Centre v8.20 prior to v8.20.1093(MR2) it is possible to create Guard Tour events that when accessed via things like repEPSS 0.8%CVE-2025-57220MEDIUMAn input validation flaw in the 'ate' service of Tenda AC10 v4.0 firmware v16.03.10.09_multi_TDE01 to escalate privileges to root via a crafEPSS 0.8%CVE-2020-15233MEDIUMOAuth2 Redirect URL validity does not respect query parameters and character casing for loopback addressesEPSS 0.8%CVE-2024-43542MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2024-43540MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2024-43538MEDIUMWindows Mobile Broadband Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2025-34060CRITICALMonero Forum Remote Code Execution via Arbitrary File Read and Cookie ForgeryEPSS 0.8%CVE-2023-27483MEDIUMfieldpath's Paved.SetValue allows growing arrays up to arbitrary sizes in crossplane-runtimeEPSS 0.8%CVE-2023-26159HIGHVersions of the package follow-redirects before 1.15.4 are vulnerable to Improper Input Validation due to the improper handling of URLs by tEPSS 0.8%CVE-2019-1920HIGHCisco IOS Access Points Software 802.11r Fast Transition Denial of Service VulnerabilityEPSS 0.8%CVE-2023-32721HIGHStored XSS in Maps elementEPSS 0.8%CVE-2023-2942HIGHImproper Input Validation in openemr/openemrEPSS 0.8%CVE-2026-20951HIGHMicrosoft SharePoint Server Remote Code Execution VulnerabilityEPSS 0.8%