Weaknesses of type CWE-20

5,418 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-2019-12626MEDIUMCisco Unified Contact Center Express Stored Cross-Site Scripting VulnerabilityEPSS 0.8%CVE-2022-21197HIGHImproper input validation for some Intel(R) PROSet/Wireless WiFi products may allow an unauthenticated user to potentially enable denial of EPSS 0.8%CVE-2024-6973HIGHRemote Code Execution in Cato Windows SDP client via crafted URLsEPSS 0.8%CVE-2024-24696MEDIUMZoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows - Improper Input ValidationEPSS 0.8%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-2021-31375HIGHJunos OS: Receipt of a specific BGP update may cause RPKI policy-checks to be bypassedEPSS 0.8%CVE-2023-36872MEDIUMVP9 Video Extensions Information Disclosure VulnerabilityEPSS 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-2023-27483MEDIUMfieldpath's Paved.SetValue allows growing arrays up to arbitrary sizes in crossplane-runtimeEPSS 0.8%CVE-2019-1920HIGHCisco IOS Access Points Software 802.11r Fast Transition Denial of Service VulnerabilityEPSS 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-2023-2942HIGHImproper Input Validation in openemr/openemrEPSS 0.8%CVE-2025-68398CRITICALWeblate has git config file overwrite vulnerability that leads to remote code executionEPSS 0.8%CVE-2024-32672MEDIUMA Segmentation Fault issue discovered in Samsung Open Source Escargot JavaScript engine allows remote attackers to cause a denial of serEPSS 0.8%CVE-2026-46456CRITICALApache Camel: Camel-AWS2-SQS: Inbound message attributes are mapped into the Exchange without an inbound HeaderFilterStrategy, allowing a message sender to inject Camel control headersEPSS 0.8%CVE-2021-41168MEDIUMHash-Collision Denial-of-Service Vulnerability in snudownEPSS 0.8%CVE-2024-30258HIGHFastDDS crash when publisher send malformed packetEPSS 0.8%