Falhas do tipo CWE-20

5.418 resultados

Validação inadequada de entrada

A aplicação recebe dados do usuário ou de fontes externas mas não valida (ou valida mal) se esses dados têm as propriedades necessárias para processamento seguro. Isso abre porta para injeção de código, buffer overflow, lógica corrompida e outros ataques que exploram dados malformados ou maliciosos.

Exemplo

Um formulário web aceita um CPF sem verificar se tem 11 dígitos numéricos, ou um app móvel recebe um ID de usuário em JSON sem confirmar se é um inteiro — atacantes exploram isso para acessar dados de outros usuários, executar queries SQL maliciosas ou causar erro de processamento.

Como mitigar

Implemente validação rigorosa na entrada: verifique tipo, comprimento, formato, intervalo de valores permitidos. Use whitelist (aceitar só o que você sabe ser seguro) em vez de blacklist. Valide tanto no cliente quanto no servidor, e use bibliotecas de parsing seguro para formatos complexos (XML, JSON).

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%