Falhas do tipo CWE-20

5.888 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-2024-38105MEDIUMWindows Layer-2 Bridge Network Driver Denial of Service VulnerabilityEPSS 0.8%CVE-2023-33182NONENextcloud Contacts photos only sanitized if mime type is all lower caseEPSS 0.8%CVE-2023-0434MEDIUMImproper Input Validation in pyload/pyloadEPSS 0.8%CVE-2023-0100—In Eclipse BIRT, starting from version 2.6.2, the default configuration allowed to retrieve a report from the same host using an absolute HTEPSS 0.8%CVE-2025-10155CRITICALPickleScan Security Bypass Using Misleading File ExtensionEPSS 0.8%CVE-2026-24936CRITICALAn improper input validation vulnerability was found in ADM while joining a AD Domain.EPSS 0.8%CVE-2024-45117HIGHAdobe Commerce | Improper Input Validation (CWE-20)EPSS 0.8%CVE-2024-47823HIGHLivewire Remote Code Execution (RCE) on File UploadsEPSS 0.8%CVE-2024-21625HIGHOne-click remote code execution via malicious deep linkEPSS 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-2017-16005—Http-signature is a "Reference implementation of Joyent's HTTP Signature Scheme". In versions <=0.9.11, http-signature signs only the headerEPSS 0.8%CVE-2021-3048MEDIUMPAN-OS: Invalid URLs in an External Dynamic List (EDL) can Lead to Firewall OutageEPSS 0.8%CVE-2026-0848CRITICALArbitrary Code Execution in NLTK StanfordSegmenter via Untrusted JAR LoadingEPSS 0.8%CVE-2020-15234MEDIUMRedirect URL matching ignores character casingEPSS 0.8%CVE-2017-6794—A vulnerability in the CLI command-parsing code of Cisco Meeting Server could allow an authenticated, local attacker to perform command injeEPSS 0.8%CVE-2025-21194HIGHMicrosoft Surface Security Feature Bypass VulnerabilityEPSS 0.8%CVE-2021-22289HIGHRCE through Project Upload from TargetEPSS 0.8%CVE-2023-38495HIGHCrossplane vulnerable to possible image tampering from missing image validation for PackagesEPSS 0.8%CVE-2023-36762HIGHMicrosoft Word Remote Code Execution VulnerabilityEPSS 0.8%CVE-2024-3028HIGHImproper Input Validation in mintplex-labs/anything-llmEPSS 0.8%