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-2018-25004MEDIUMInvariant failure when explaining a find with a UUIDEPSS 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-2022-21687MEDIUMCommand injection in gh-ostEPSS 1.0%CVE-2020-3568MEDIUMCisco Email Security Appliance URL Filtering Bypass VulnerabilityEPSS 1.0%CVE-2022-47100HIGHA vulnerability in Sengled Smart bulb 0x0000024 allows attackers to arbitrarily perform a factory reset on the device via a crafted IEEE 802EPSS 1.0%CVE-2023-38704HIGHimport-in-the-middle allows unsanitized user controlled input in module generationEPSS 1.0%CVE-2026-40176HIGHComposer is vulnerable to Command Injection via Malicious Perforce RepositoryEPSS 1.0%CVE-2020-7866HIGHTobesoft XPLATFORM Arbitrary Command Execution VulnerabilityEPSS 1.0%CVE-2021-26618HIGHTmax ToOffice arbitrary file creation vulnerabilityEPSS 1.0%CVE-2025-55270LOWHCL Aftermarket DPC is affected by Improper Input ValidationEPSS 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-2022-29606CRITICALAn issue was discovered in ONOS 2.5.1. An intent with a large port number shows the CORRUPT state, which is misleading to a network operatorEPSS 1.0%CVE-2025-50151HIGHApache Jena: Configuration files uploaded by administrative users are not check properlyEPSS 1.0%CVE-2019-16761MEDIUMValidator parsing discrepancy due to string encoding in NPM slp-validate 1.0.0EPSS 1.0%CVE-2020-3205HIGHCisco IOS Software for Cisco Industrial Routers Virtual Device Server Inter-VM Channel Command Injection VulnerabilityEPSS 1.0%CVE-2020-1756—In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, insufficient input escaping was applied to the PHP unit webrunner admin tool.EPSS 1.0%CVE-2017-15137MEDIUMThe OpenShift image import whitelist failed to enforce restrictions correctly when running commands such as "oc tag", for example. This coulEPSS 1.0%CVE-2025-43223HIGHA denial-of-service issue was addressed with improved input validation. This issue is fixed in iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOEPSS 1.0%CVE-2026-20093CRITICALCisco Integrated Management Controller Authentication Bypass VulnerabilityEPSS 1.0%