Falhas do tipo CWE-20

5.449 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-2021-34714HIGHMultiple Cisco Operating Systems Unidirectional Link Detection Denial of Service VulnerabilityEPSS 0.4%CVE-2026-61427MEDIUMPraisonAI before 4.6.78 Authentication Bypass via HTTP-streamEPSS 0.4%CVE-2025-27378HIGHSQL Injection in AES Due to Inactive SQL Parsing ConfigurationEPSS 0.4%CVE-2025-47968HIGHMicrosoft AutoUpdate (MAU) Elevation of Privilege VulnerabilityEPSS 0.4%CVE-2024-39780HIGHUse of unsafe yaml load in dynparamEPSS 0.4%CVE-2025-23202CRITICALImproper Input Validation in Bible Module for ROBLOXEPSS 0.4%CVE-2022-36859MEDIUMImproper input validation vulnerability in SmartTagPlugin prior to version 1.2.21-6 allows privileged attackers to trigger a XSS on a victimEPSS 0.4%CVE-2026-31192MEDIUMInsufficient validation of Chrome extension identifiers in Raindrop.io Bookmark Manager Web App 5.6.76.0 allows attackers to obtain sensitivEPSS 0.4%CVE-2025-40831HIGHA vulnerability has been identified in SINEC Security Monitor (All versions < V4.10.0). The affected application lacks input validation of dEPSS 0.4%CVE-2021-0126HIGHImproper input validation for the Intel(R) Manageability Commander before version 2.2 may allow an authenticated user to potentially enable EPSS 0.4%CVE-2026-13925HIGHInappropriate implementation in Downloads in Google Chrome on Windows prior to 150.0.7871.47 allowed a remote attacker who convinced a user EPSS 0.4%CVE-2023-21647MEDIUMImproper Input Validation in Bluetooth HOSTEPSS 0.4%CVE-2026-60719CRITICALVulnerability in the Oracle BI Publisher product of Oracle Analytics (component: Web Service API). Supported versions that are affected areEPSS 0.4%CVE-2020-3602MEDIUMCisco StarOS Privilege Escalation VulnerabilityEPSS 0.4%CVE-2026-79139HIGHImproper input validation in Media in Google Chrome on on Windows prior to 152.0.7977.65 allowed a remote attacker who had compromised the rEPSS 0.4%CVE-2019-1656MEDIUMCisco Enterprise NFV Infrastructure Software Linux Shell Access VulnerabilityEPSS 0.4%CVE-2019-15959MEDIUMCisco Small Business SPA500 Series IP Phones Local Script Execution VulnerabilityEPSS 0.4%CVE-2026-3620MEDIUMWord Replacer <= 0.4 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'Replacement' ParameterEPSS 0.4%CVE-2026-18801CRITICALStored Clickhouse SQL Injection Through Customer Usage AttributionEPSS 0.4%CVE-2026-28322MEDIUMSolarWinds Database Performance Analyzer Stored Cross-Site Scripting VulnerabilityEPSS 0.4%