Falhas do tipo CWE-20

5.399 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-2020-14513—CodeMeter (All versions prior to 6.81) and the software using it may crash while processing a specifically crafted license file due to unverEPSS 1.6%CVE-2022-24847HIGHImproper Input Validation in GeoServerEPSS 1.6%CVE-2019-12632MEDIUMCisco Finesse Request Processing Server-Side Request Forgery VulnerabilityEPSS 1.6%CVE-2022-36085HIGHOPA Compiler: Bypass of WithUnsafeBuiltins using `with` keyword to mock functionsEPSS 1.6%CVE-2025-0938MEDIUMURL parser allowed square brackets in domain namesEPSS 1.6%CVE-2020-3226HIGHCisco IOS and IOS XE Software Session Initiation Protocol Denial of Service VulnerabilityEPSS 1.6%CVE-2022-4886HIGHIngress-nginx `path` sanitization can be bypassed with `log_format` directiveEPSS 1.6%CVE-2018-1000037MEDIUMIn Artifex MuPDF 1.12.0 and earlier, multiple reachable assertions in the PDF parser allow an attacker to cause a denial of service (assert EPSS 1.6%CVE-2023-6395MEDIUMMock: privilege escalation for users that can access mock configurationEPSS 1.6%CVE-2019-18247—An attacker may use a specially crafted message to force Relion 650 series (versions 1.3.0.5 and prior) or Relion 670 series (versions 1.2.3EPSS 1.6%CVE-2020-7842MEDIUMD'live AP command injection vulnerabilityEPSS 1.6%CVE-2019-13524—GE PACSystems RX3i CPE100/115: All versions prior to R9.85,CPE302/305/310/330/400/410: All versions prior to R9.90,CRU/320 All versions(End EPSS 1.5%CVE-2018-0256—A vulnerability in the peer-to-peer message processing functionality of Cisco Packet Data Network Gateway could allow an unauthenticated, reEPSS 1.5%CVE-2026-44343CRITICALWGDashboard: Critical Vulnerability in 4.3.2EPSS 1.5%CVE-2020-8476MEDIUMABB Central Licensing System - Elevation of Privilege VulnerabilityEPSS 1.5%CVE-2020-15256HIGHPrototype pollution in object-pathEPSS 1.5%CVE-2018-16556HIGHA vulnerability has been identified in SIMATIC S7-400 CPU 412-1 DP V7 (All versions), SIMATIC S7-400 CPU 412-2 DP V7 (All versions), SIMAEPSS 1.5%CVE-2021-27388—SINAMICS medium voltage routable products are affected by a vulnerability in the Sm@rtServer component for remote access that could allow anEPSS 1.5%CVE-2017-6759—A vulnerability in the UpgradeManager of the Cisco Prime Collaboration Provisioning Tool 12.1 could allow an authenticated, remote attacker EPSS 1.5%CVE-2021-28655MEDIUMApache Zeppelin: Arbitrary file deletion vulnerabilityEPSS 1.5%