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-2024-23483HIGHLocal Privilege Escalation via lack of input validationEPSS 0.7%CVE-2025-43342CRITICALA correctness issue was addressed with improved checks. This issue is fixed in Safari 26, iOS 18.7 and iPadOS 18.7, iOS 26 and iPadOS 26, maEPSS 0.7%CVE-2025-43253CRITICALThis issue was addressed with improved input validation. This issue is fixed in macOS Sequoia 15.6, macOS Sonoma 14.7.7. A malicious app mayEPSS 0.7%CVE-2026-7755HIGHMCP Server Configuration Validator Bypass via File Upload APIEPSS 0.7%CVE-2017-3873—A vulnerability in the Plug-and-Play (PnP) subsystem of the Cisco Aironet 1800, 2800, and 3800 Series Access Points running a Lightweight AcEPSS 0.7%CVE-2022-29613—Due to insufficient input validation, SAP Employee Self Service allows an authenticated attacker with user privileges to alter employee numbEPSS 0.7%CVE-2026-45721CRITICALAlgernon: handler.lua discovery walks parent directories above the server rootEPSS 0.7%CVE-2024-21507MEDIUMVersions of the package mysql2 before 3.9.3 are vulnerable to Improper Input Validation through the keyFromFields function, resulting in cacEPSS 0.7%CVE-2025-34060CRITICALMonero Forum Remote Code Execution via Arbitrary File Read and Cookie ForgeryEPSS 0.7%CVE-2025-57644CRITICALAccela Automation Platform 22.2.3.0.230103 contains multiple vulnerabilities in the Test Script feature. An authenticated administrative useEPSS 0.7%CVE-2024-42516HIGHApache HTTP Server: HTTP response splittingEPSS 0.7%CVE-2019-14905HIGHA vulnerability was found in Ansible Engine versions 2.9.x before 2.9.3, 2.8.x before 2.8.8, 2.7.x before 2.7.16 and earlier, where in AnsibEPSS 0.7%CVE-2022-43863MEDIUMIBM QRadar SIEM privilege escalationEPSS 0.7%CVE-2025-11938MEDIUMChurchCRM setup.php deserializationEPSS 0.7%CVE-2020-15210MEDIUMSegmentation fault in tensorflow-liteEPSS 0.7%CVE-2022-43929MEDIUMIBM Db2 for Linux, UNIX and Windows denial of serviceEPSS 0.7%CVE-2026-56140CRITICALApache Camel AWS2 SNS: An inbound Camel-namespace filter was added to Sns2HeaderFilterStrategy to align it with sibling componentsEPSS 0.7%CVE-2026-65637CRITICALApache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incompleteEPSS 0.7%CVE-2026-78329CRITICALApache Camel: Camel-Undertow: the endpoint discarded the undertow-specific header filter strategy in favour of the base HTTP one, so the undertow filtering never ran on endpoint-configured routesEPSS 0.7%CVE-2023-47747MEDIUMIBM Db2 denial of serviceEPSS 0.7%