Weaknesses of type CWE-20

5,421 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-2021-0208HIGHJunos OS and Junos OS Evolved: In bidirectional LSP configurations, on MPLS egress router RPD may core upon receipt of specific malformed RSVP packet.EPSS 0.7%CVE-2023-5763MEDIUMGlassfish remote code executionEPSS 0.7%CVE-2025-61822MEDIUMColdFusion | Improper Input Validation (CWE-20)EPSS 0.7%CVE-2024-29042MEDIUMTranslate Cache Poisoning VulnerabilityEPSS 0.7%CVE-2024-32669MEDIUMPossible stack overflow due to a string encoding processing errorEPSS 0.6%CVE-2025-47283CRITICALBypassing project secret validation can lead to privilege escalationEPSS 0.6%CVE-2025-21375HIGHKernel Streaming WOW Thunk Service Driver Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2024-20405MEDIUMA vulnerability in the web-based management interface of Cisco Finesse could allow an unauthenticated, remote attacker to conduct a stored XEPSS 0.6%CVE-2023-0229MEDIUMA flaw was found in github.com/openshift/apiserver-library-go, used in OpenShift 4.12 and 4.11, that contains an issue that can allow low-prEPSS 0.6%CVE-2024-38201HIGHAzure Stack Hub Elevation of Privilege VulnerabilityEPSS 0.6%CVE-2022-41694MEDIUMBIG-IP and BIG-IQ mcpd vulnerability CVE-2022-41694EPSS 0.6%CVE-2022-41813MEDIUMBIG-IP PEM and AFM TMUI, TMSH and iControl vulnerability CVE-2022-41813EPSS 0.6%CVE-2022-32248—Due to missing input validation in the Manage Checkbooks component of SAP S/4HANA - version 101, 102, 103, 104, 105, 106, an attacker could EPSS 0.6%CVE-2025-29784HIGHNamelessMC Has Lack of Length Validation for s Parameter in GET RequestsEPSS 0.6%CVE-2023-51438CRITICALA vulnerability has been identified in SIMATIC IPC1047E (All versions with maxView Storage Manager < V4.14.00.26068 on Windows), SIMATIC IPCEPSS 0.6%CVE-2023-0026HIGH2023-06: Out-of-Cycle Security Bulletin: Junos OS and Junos OS Evolved: A BGP session will flap upon receipt of a specific, optional transitive attributeEPSS 0.6%CVE-2025-26858HIGHA buffer overflow vulnerability exists in the Modbus TCP functionality of Socomec DIRIS Digiware M-70 1.6.9. A specially crafted set of netwEPSS 0.6%CVE-2020-29021LOWScripting tag chars < > not filtered in input fields could cause Cross-Site Scripting (XSS)EPSS 0.6%CVE-2026-43944CRITICALelecterm: dangerous code can be run through links or command lineEPSS 0.6%CVE-2022-2502HIGHA vulnerability exists in the HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can EPSS 0.6%