Falhas do tipo CWE-20

5.887 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-2026-48384MEDIUMColdFusion | Improper Input Validation (CWE-20)EPSS 1.0%CVE-2021-39186MEDIUMImproper Input Validation in GlobalNewFilesEPSS 1.0%CVE-2025-47777CRITICAL5ire Client Vulnerable to Cross-Site Scripting (XSS) and Remote Code Execution (RCE)EPSS 1.0%CVE-2026-42579HIGHNetty: DNS Codec Input Validation Bypass in Netty (Encoder + Decoder)EPSS 1.0%CVE-2020-8100CRITICALIncomplete validation in detection code in Bitdefender Engines (VA-8589)EPSS 1.0%CVE-2021-22800—A CWE-20: Improper Input Validation vulnerability exists that could cause a Denial of Service when a crafted packet is sent to the controlleEPSS 1.0%CVE-2018-25004MEDIUMInvariant failure when explaining a find with a UUIDEPSS 1.0%CVE-2022-21687MEDIUMCommand injection in gh-ostEPSS 1.0%CVE-2020-3568MEDIUMCisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 1.0%CVE-2021-25378MEDIUMImproper access control of certain port in SmartThings prior to version 1.7.63.6 allows remote temporary denial of service.EPSS 1.0%CVE-2023-38704HIGHimport-in-the-middle allows unsanitized user controlled input in module generationEPSS 1.0%CVE-2021-41769—A vulnerability has been identified in SIPROTEC 5 6MD85 devices (CPU variant CP300) (All versions < V8.83), SIPROTEC 5 6MD86 devices (CPU vaEPSS 1.0%CVE-2020-15109MEDIUMAbility to change order address without triggering address validations in solidusEPSS 1.0%CVE-2021-26618HIGHTmax ToOffice arbitrary file creation vulnerabilityEPSS 1.0%CVE-2020-7866HIGHTobesoft XPLATFORM Arbitrary Command Execution VulnerabilityEPSS 1.0%CVE-2022-0484HIGHImproper URL Validation causes Mirantis Container Cloud Lens Extension to open external programsEPSS 1.0%CVE-2017-12228—A vulnerability in the Cisco Network Plug and Play application of Cisco IOS 12.4 through 15.6 and Cisco IOS XE 3.3 through 16.4 could allow EPSS 1.0%CVE-2019-16761MEDIUMValidator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0EPSS 1.0%CVE-2022-39881MEDIUMImproper input validation vulnerability for processing SIB12 PDU in Exynos modems prior to SMR Sep-2022 Release allows remote attacker to reEPSS 1.0%CVE-2020-3205HIGHCisco IOS Software for Cisco Industrial Routers Virtual Device Server Inter-VM Channel Command Injection VulnerabilityEPSS 1.0%